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Finding the Fourth Proportional to 5,200,666.80, 7,787,003.40 and 5,200,666.80

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Solution

The fourth proportional to 5,200,666.80, 7,787,003.40 and 5,200,666.80 is: 7,787,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,200,666.80 : 7,787,003.40 = 5,200,666.80 : x
  2. Step 2: Convert to fraction form
    5,200,666.80/7,787,003.40 = 5,200,666.80/x
  3. Step 3: Cross multiply
    5,200,666.80x = 7,787,003.40 × 5,200,666.80
  4. Step 4: Simplify right side
    5,200,666.80x = 40,497,610,053,867.12
  5. Step 5: Solve for x
    x = 40,497,610,053,867.12/5,200,666.80
  6. Step 6: Final answer
    x = 7,787,003.40

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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.