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Finding the Fourth Proportional to 176,159.61, 243,083.84 and 99,685.69

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Solution

The fourth proportional to 176,159.61, 243,083.84 and 99,685.69 is: 137,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,159.61 : 243,083.84 = 99,685.69 : x
  2. Step 2: Convert to fraction form
    176,159.61/243,083.84 = 99,685.69/x
  3. Step 3: Cross multiply
    176,159.61x = 243,083.84 × 99,685.69
  4. Step 4: Simplify right side
    176,159.61x = 24,231,979,212.11
  5. Step 5: Solve for x
    x = 24,231,979,212.11/176,159.61
  6. Step 6: Final answer
    x = 137,556.95

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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.