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Finding the Fourth Proportional to 91,867,672.80, 137,801,509.20 and 27,165,715.20

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Solution

The fourth proportional to 91,867,672.80, 137,801,509.20 and 27,165,715.20 is: 40,748,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,867,672.80 : 137,801,509.20 = 27,165,715.20 : x
  2. Step 2: Convert to fraction form
    91,867,672.80/137,801,509.20 = 27,165,715.20/x
  3. Step 3: Cross multiply
    91,867,672.80x = 137,801,509.20 × 27,165,715.20
  4. Step 4: Simplify right side
    91,867,672.80x = 3,743,476,553,057,379.50
  5. Step 5: Solve for x
    x = 3,743,476,553,057,379.50/91,867,672.80
  6. Step 6: Final answer
    x = 40,748,572.80

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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.