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Finding the Fourth Proportional to 287,193,489.60, 430,867,216.80 and 114,791,404.80

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Solution

The fourth proportional to 287,193,489.60, 430,867,216.80 and 114,791,404.80 is: 172,217,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,193,489.60 : 430,867,216.80 = 114,791,404.80 : x
  2. Step 2: Convert to fraction form
    287,193,489.60/430,867,216.80 = 114,791,404.80/x
  3. Step 3: Cross multiply
    287,193,489.60x = 430,867,216.80 × 114,791,404.80
  4. Step 4: Simplify right side
    287,193,489.60x = 49,459,853,098,738,160
  5. Step 5: Solve for x
    x = 49,459,853,098,738,160/287,193,489.60
  6. Step 6: Final answer
    x = 172,217,877.11

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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.