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Finding the Fourth Proportional to 92,329.92, 138,385.53 and 42,367.91

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Solution

The fourth proportional to 92,329.92, 138,385.53 and 42,367.91 is: 63,501.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,329.92 : 138,385.53 = 42,367.91 : x
  2. Step 2: Convert to fraction form
    92,329.92/138,385.53 = 42,367.91/x
  3. Step 3: Cross multiply
    92,329.92x = 138,385.53 × 42,367.91
  4. Step 4: Simplify right side
    92,329.92x = 5,863,104,988.41
  5. Step 5: Solve for x
    x = 5,863,104,988.41/92,329.92
  6. Step 6: Final answer
    x = 63,501.68

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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.