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Finding the Fourth Proportional to 176,061.92, 242,939.40 and 99,560.66

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Solution

The fourth proportional to 176,061.92, 242,939.40 and 99,560.66 is: 137,378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,061.92 : 242,939.40 = 99,560.66 : x
  2. Step 2: Convert to fraction form
    176,061.92/242,939.40 = 99,560.66/x
  3. Step 3: Cross multiply
    176,061.92x = 242,939.40 × 99,560.66
  4. Step 4: Simplify right side
    176,061.92x = 24,187,207,004.00
  5. Step 5: Solve for x
    x = 24,187,207,004.00/176,061.92
  6. Step 6: Final answer
    x = 137,378.98

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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.