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Finding the Fourth Proportional to 542,117.40, 813,176.10 and 341,788.20

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Solution

The fourth proportional to 542,117.40, 813,176.10 and 341,788.20 is: 512,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,117.40 : 813,176.10 = 341,788.20 : x
  2. Step 2: Convert to fraction form
    542,117.40/813,176.10 = 341,788.20/x
  3. Step 3: Cross multiply
    542,117.40x = 813,176.10 × 341,788.20
  4. Step 4: Simplify right side
    542,117.40x = 277,933,995,502.02
  5. Step 5: Solve for x
    x = 277,933,995,502.02/542,117.40
  6. Step 6: Final answer
    x = 512,682.30

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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.