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Finding the Fourth Proportional to 527,947.60, 791,921.40 and 520,074.40

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Solution

The fourth proportional to 527,947.60, 791,921.40 and 520,074.40 is: 780,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,947.60 : 791,921.40 = 520,074.40 : x
  2. Step 2: Convert to fraction form
    527,947.60/791,921.40 = 520,074.40/x
  3. Step 3: Cross multiply
    527,947.60x = 791,921.40 × 520,074.40
  4. Step 4: Simplify right side
    527,947.60x = 411,858,046,952.16
  5. Step 5: Solve for x
    x = 411,858,046,952.16/527,947.60
  6. Step 6: Final answer
    x = 780,111.60

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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.