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Finding the Fourth Proportional to 206,952,155.60, 310,428,233.40 and 61,390,965.20

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Solution

The fourth proportional to 206,952,155.60, 310,428,233.40 and 61,390,965.20 is: 92,086,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,952,155.60 : 310,428,233.40 = 61,390,965.20 : x
  2. Step 2: Convert to fraction form
    206,952,155.60/310,428,233.40 = 61,390,965.20/x
  3. Step 3: Cross multiply
    206,952,155.60x = 310,428,233.40 × 61,390,965.20
  4. Step 4: Simplify right side
    206,952,155.60x = 19,057,488,873,756,876
  5. Step 5: Solve for x
    x = 19,057,488,873,756,876/206,952,155.60
  6. Step 6: Final answer
    x = 92,086,447.80

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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.