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Finding the Fourth Proportional to 100,937.70, 151,479.45 and 56,517.30

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Solution

The fourth proportional to 100,937.70, 151,479.45 and 56,517.30 is: 84,816.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,937.70 : 151,479.45 = 56,517.30 : x
  2. Step 2: Convert to fraction form
    100,937.70/151,479.45 = 56,517.30/x
  3. Step 3: Cross multiply
    100,937.70x = 151,479.45 × 56,517.30
  4. Step 4: Simplify right side
    100,937.70x = 8,561,209,519.49
  5. Step 5: Solve for x
    x = 8,561,209,519.49/100,937.70
  6. Step 6: Final answer
    x = 84,816.77

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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.