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Finding the Fourth Proportional to 620,575,465,500.80, 930,863,198,251.20 and 620,575,465,500.80

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Solution

The fourth proportional to 620,575,465,500.80, 930,863,198,251.20 and 620,575,465,500.80 is: 930,863,198,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,575,465,500.80 : 930,863,198,251.20 = 620,575,465,500.80 : x
  2. Step 2: Convert to fraction form
    620,575,465,500.80/930,863,198,251.20 = 620,575,465,500.80/x
  3. Step 3: Cross multiply
    620,575,465,500.80x = 930,863,198,251.20 × 620,575,465,500.80
  4. Step 4: Simplify right side
    620,575,465,500.80x = 577,670,862,572,301,930,463,232
  5. Step 5: Solve for x
    x = 577,670,862,572,301,930,463,232/620,575,465,500.80
  6. Step 6: Final answer
    x = 930,863,198,251.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.