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Finding the Fourth Proportional to 617,127.40, 925,691.10 and 492,711.40

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Solution

The fourth proportional to 617,127.40, 925,691.10 and 492,711.40 is: 739,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,127.40 : 925,691.10 = 492,711.40 : x
  2. Step 2: Convert to fraction form
    617,127.40/925,691.10 = 492,711.40/x
  3. Step 3: Cross multiply
    617,127.40x = 925,691.10 × 492,711.40
  4. Step 4: Simplify right side
    617,127.40x = 456,098,557,848.54
  5. Step 5: Solve for x
    x = 456,098,557,848.54/617,127.40
  6. Step 6: Final answer
    x = 739,067.10

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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.