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Finding the Fourth Proportional to 8,600,863.50, 12,898,221.30 and 2,842,531.38

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Solution

The fourth proportional to 8,600,863.50, 12,898,221.30 and 2,842,531.38 is: 4,262,781.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600,863.50 : 12,898,221.30 = 2,842,531.38 : x
  2. Step 2: Convert to fraction form
    8,600,863.50/12,898,221.30 = 2,842,531.38/x
  3. Step 3: Cross multiply
    8,600,863.50x = 12,898,221.30 × 2,842,531.38
  4. Step 4: Simplify right side
    8,600,863.50x = 36,663,598,791,434.40
  5. Step 5: Solve for x
    x = 36,663,598,791,434.40/8,600,863.50
  6. Step 6: Final answer
    x = 4,262,781.15

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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.