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Finding the Fourth Proportional to 623,840.80, 935,761.20 and 584,474.80

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Solution

The fourth proportional to 623,840.80, 935,761.20 and 584,474.80 is: 876,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,840.80 : 935,761.20 = 584,474.80 : x
  2. Step 2: Convert to fraction form
    623,840.80/935,761.20 = 584,474.80/x
  3. Step 3: Cross multiply
    623,840.80x = 935,761.20 × 584,474.80
  4. Step 4: Simplify right side
    623,840.80x = 546,928,840,217.76
  5. Step 5: Solve for x
    x = 546,928,840,217.76/623,840.80
  6. Step 6: Final answer
    x = 876,712.20

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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.