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Finding the Fourth Proportional to 521,011.37, 781,517.06 and 147,034.37

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Solution

The fourth proportional to 521,011.37, 781,517.06 and 147,034.37 is: 220,551.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,011.37 : 781,517.06 = 147,034.37 : x
  2. Step 2: Convert to fraction form
    521,011.37/781,517.06 = 147,034.37/x
  3. Step 3: Cross multiply
    521,011.37x = 781,517.06 × 147,034.37
  4. Step 4: Simplify right side
    521,011.37x = 114,909,868,561.35
  5. Step 5: Solve for x
    x = 114,909,868,561.35/521,011.37
  6. Step 6: Final answer
    x = 220,551.56

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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.