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Finding the Fourth Proportional to 92,689,572.60, 139,034,358.90 and 51,874,903.80

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Solution

The fourth proportional to 92,689,572.60, 139,034,358.90 and 51,874,903.80 is: 77,812,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,689,572.60 : 139,034,358.90 = 51,874,903.80 : x
  2. Step 2: Convert to fraction form
    92,689,572.60/139,034,358.90 = 51,874,903.80/x
  3. Step 3: Cross multiply
    92,689,572.60x = 139,034,358.90 × 51,874,903.80
  4. Step 4: Simplify right side
    92,689,572.60x = 7,212,393,992,832,174
  5. Step 5: Solve for x
    x = 7,212,393,992,832,174/92,689,572.60
  6. Step 6: Final answer
    x = 77,812,355.70

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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.