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Finding the Fourth Proportional to 92,811.81, 139,220.45 and 22,691.13

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Solution

The fourth proportional to 92,811.81, 139,220.45 and 22,691.13 is: 34,037.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,811.81 : 139,220.45 = 22,691.13 : x
  2. Step 2: Convert to fraction form
    92,811.81/139,220.45 = 22,691.13/x
  3. Step 3: Cross multiply
    92,811.81x = 139,220.45 × 22,691.13
  4. Step 4: Simplify right side
    92,811.81x = 3,159,069,329.61
  5. Step 5: Solve for x
    x = 3,159,069,329.61/92,811.81
  6. Step 6: Final answer
    x = 34,037.36

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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.