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Finding the Fourth Proportional to 176,428.86, 243,454.21 and 99,932.68

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Solution

The fourth proportional to 176,428.86, 243,454.21 and 99,932.68 is: 137,897.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,428.86 : 243,454.21 = 99,932.68 : x
  2. Step 2: Convert to fraction form
    176,428.86/243,454.21 = 99,932.68/x
  3. Step 3: Cross multiply
    176,428.86x = 243,454.21 × 99,932.68
  4. Step 4: Simplify right side
    176,428.86x = 24,329,031,662.58
  5. Step 5: Solve for x
    x = 24,329,031,662.58/176,428.86
  6. Step 6: Final answer
    x = 137,897.12

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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.