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Finding the Fourth Proportional to 530,186.70, 795,280.05 and 472,125.90

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Solution

The fourth proportional to 530,186.70, 795,280.05 and 472,125.90 is: 708,188.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,186.70 : 795,280.05 = 472,125.90 : x
  2. Step 2: Convert to fraction form
    530,186.70/795,280.05 = 472,125.90/x
  3. Step 3: Cross multiply
    530,186.70x = 795,280.05 × 472,125.90
  4. Step 4: Simplify right side
    530,186.70x = 375,472,309,358.30
  5. Step 5: Solve for x
    x = 375,472,309,358.30/530,186.70
  6. Step 6: Final answer
    x = 708,188.85

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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.