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Finding the Fourth Proportional to 176,387.61, 243,409.29 and 99,913.76

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Solution

The fourth proportional to 176,387.61, 243,409.29 and 99,913.76 is: 137,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,387.61 : 243,409.29 = 99,913.76 : x
  2. Step 2: Convert to fraction form
    176,387.61/243,409.29 = 99,913.76/x
  3. Step 3: Cross multiply
    176,387.61x = 243,409.29 × 99,913.76
  4. Step 4: Simplify right side
    176,387.61x = 24,319,936,165.78
  5. Step 5: Solve for x
    x = 24,319,936,165.78/176,387.61
  6. Step 6: Final answer
    x = 137,877.80

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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.