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Finding the Fourth Proportional to 55,325,200.80, 77,568,655.20 and 55,325,200.80

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Solution

The fourth proportional to 55,325,200.80, 77,568,655.20 and 55,325,200.80 is: 77,568,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,325,200.80 : 77,568,655.20 = 55,325,200.80 : x
  2. Step 2: Convert to fraction form
    55,325,200.80/77,568,655.20 = 55,325,200.80/x
  3. Step 3: Cross multiply
    55,325,200.80x = 77,568,655.20 × 55,325,200.80
  4. Step 4: Simplify right side
    55,325,200.80x = 4,291,501,424,725,964
  5. Step 5: Solve for x
    x = 4,291,501,424,725,964/55,325,200.80
  6. Step 6: Final answer
    x = 77,568,655.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.