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Finding the Fourth Proportional to 118,443.88, 177,677.76 and 38,478.52

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Solution

The fourth proportional to 118,443.88, 177,677.76 and 38,478.52 is: 57,721.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,443.88 : 177,677.76 = 38,478.52 : x
  2. Step 2: Convert to fraction form
    118,443.88/177,677.76 = 38,478.52/x
  3. Step 3: Cross multiply
    118,443.88x = 177,677.76 × 38,478.52
  4. Step 4: Simplify right side
    118,443.88x = 6,836,776,353.33
  5. Step 5: Solve for x
    x = 6,836,776,353.33/118,443.88
  6. Step 6: Final answer
    x = 57,721.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.