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Finding the Fourth Proportional to 144,897.80, 217,346.70 and 91,753.70

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Solution

The fourth proportional to 144,897.80, 217,346.70 and 91,753.70 is: 137,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,897.80 : 217,346.70 = 91,753.70 : x
  2. Step 2: Convert to fraction form
    144,897.80/217,346.70 = 91,753.70/x
  3. Step 3: Cross multiply
    144,897.80x = 217,346.70 × 91,753.70
  4. Step 4: Simplify right side
    144,897.80x = 19,942,363,907.79
  5. Step 5: Solve for x
    x = 19,942,363,907.79/144,897.80
  6. Step 6: Final answer
    x = 137,630.55

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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.