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Finding the Fourth Proportional to 572,469.40, 858,704.10 and 151,787.80

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Solution

The fourth proportional to 572,469.40, 858,704.10 and 151,787.80 is: 227,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,469.40 : 858,704.10 = 151,787.80 : x
  2. Step 2: Convert to fraction form
    572,469.40/858,704.10 = 151,787.80/x
  3. Step 3: Cross multiply
    572,469.40x = 858,704.10 × 151,787.80
  4. Step 4: Simplify right side
    572,469.40x = 130,340,806,189.98
  5. Step 5: Solve for x
    x = 130,340,806,189.98/572,469.40
  6. Step 6: Final answer
    x = 227,681.70

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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.