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Finding the Fourth Proportional to 502,163.36, 753,244.80 and 128,186.24

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Solution

The fourth proportional to 502,163.36, 753,244.80 and 128,186.24 is: 192,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,163.36 : 753,244.80 = 128,186.24 : x
  2. Step 2: Convert to fraction form
    502,163.36/753,244.80 = 128,186.24/x
  3. Step 3: Cross multiply
    502,163.36x = 753,244.80 × 128,186.24
  4. Step 4: Simplify right side
    502,163.36x = 96,555,618,711.55
  5. Step 5: Solve for x
    x = 96,555,618,711.55/502,163.36
  6. Step 6: Final answer
    x = 192,279.30

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Double scale
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Similar ratio
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1.5x scale

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.