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Finding the Fourth Proportional to 176,321.39, 243,326.42 and 99,838.47

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Solution

The fourth proportional to 176,321.39, 243,326.42 and 99,838.47 is: 137,778.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,321.39 : 243,326.42 = 99,838.47 : x
  2. Step 2: Convert to fraction form
    176,321.39/243,326.42 = 99,838.47/x
  3. Step 3: Cross multiply
    176,321.39x = 243,326.42 × 99,838.47
  4. Step 4: Simplify right side
    176,321.39x = 24,293,336,984.19
  5. Step 5: Solve for x
    x = 24,293,336,984.19/176,321.39
  6. Step 6: Final answer
    x = 137,778.73

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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.