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Finding the Fourth Proportional to 530,401.20, 795,601.80 and 472,340.40

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Solution

The fourth proportional to 530,401.20, 795,601.80 and 472,340.40 is: 708,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,401.20 : 795,601.80 = 472,340.40 : x
  2. Step 2: Convert to fraction form
    530,401.20/795,601.80 = 472,340.40/x
  3. Step 3: Cross multiply
    530,401.20x = 795,601.80 × 472,340.40
  4. Step 4: Simplify right side
    530,401.20x = 375,794,872,452.72
  5. Step 5: Solve for x
    x = 375,794,872,452.72/530,401.20
  6. Step 6: Final answer
    x = 708,510.60

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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.