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Finding the Fourth Proportional to 162,981.92, 224,910.70 and 91,366.56

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Solution

The fourth proportional to 162,981.92, 224,910.70 and 91,366.56 is: 126,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,981.92 : 224,910.70 = 91,366.56 : x
  2. Step 2: Convert to fraction form
    162,981.92/224,910.70 = 91,366.56/x
  3. Step 3: Cross multiply
    162,981.92x = 224,910.70 × 91,366.56
  4. Step 4: Simplify right side
    162,981.92x = 20,549,316,966.19
  5. Step 5: Solve for x
    x = 20,549,316,966.19/162,981.92
  6. Step 6: Final answer
    x = 126,083.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.