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Finding the Fourth Proportional to 176,322.39, 243,327.80 and 99,839.47

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Solution

The fourth proportional to 176,322.39, 243,327.80 and 99,839.47 is: 137,780.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,322.39 : 243,327.80 = 99,839.47 : x
  2. Step 2: Convert to fraction form
    176,322.39/243,327.80 = 99,839.47/x
  3. Step 3: Cross multiply
    176,322.39x = 243,327.80 × 99,839.47
  4. Step 4: Simplify right side
    176,322.39x = 24,293,718,588.27
  5. Step 5: Solve for x
    x = 24,293,718,588.27/176,322.39
  6. Step 6: Final answer
    x = 137,780.11

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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.