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Finding the Fourth Proportional to 39,866,343.40, 55,964,046.20 and 39,866,343.40

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Solution

The fourth proportional to 39,866,343.40, 55,964,046.20 and 39,866,343.40 is: 55,964,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,866,343.40 : 55,964,046.20 = 39,866,343.40 : x
  2. Step 2: Convert to fraction form
    39,866,343.40/55,964,046.20 = 39,866,343.40/x
  3. Step 3: Cross multiply
    39,866,343.40x = 55,964,046.20 × 39,866,343.40
  4. Step 4: Simplify right side
    39,866,343.40x = 2,231,081,883,862,665
  5. Step 5: Solve for x
    x = 2,231,081,883,862,665/39,866,343.40
  6. Step 6: Final answer
    x = 55,964,046.20

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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.