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Finding the Fourth Proportional to 616,853.70, 925,280.55 and 476,712.90

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Solution

The fourth proportional to 616,853.70, 925,280.55 and 476,712.90 is: 715,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,853.70 : 925,280.55 = 476,712.90 : x
  2. Step 2: Convert to fraction form
    616,853.70/925,280.55 = 476,712.90/x
  3. Step 3: Cross multiply
    616,853.70x = 925,280.55 × 476,712.90
  4. Step 4: Simplify right side
    616,853.70x = 441,093,174,304.10
  5. Step 5: Solve for x
    x = 441,093,174,304.10/616,853.70
  6. Step 6: Final answer
    x = 715,069.35

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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.