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Finding the Fourth Proportional to 542,408.10, 813,612.15 and 353,451.30

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Solution

The fourth proportional to 542,408.10, 813,612.15 and 353,451.30 is: 530,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,408.10 : 813,612.15 = 353,451.30 : x
  2. Step 2: Convert to fraction form
    542,408.10/813,612.15 = 353,451.30/x
  3. Step 3: Cross multiply
    542,408.10x = 813,612.15 × 353,451.30
  4. Step 4: Simplify right side
    542,408.10x = 287,572,272,113.30
  5. Step 5: Solve for x
    x = 287,572,272,113.30/542,408.10
  6. Step 6: Final answer
    x = 530,176.95

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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.