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Finding the Fourth Proportional to 542,159.40, 813,239.10 and 148,175.40

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Solution

The fourth proportional to 542,159.40, 813,239.10 and 148,175.40 is: 222,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,159.40 : 813,239.10 = 148,175.40 : x
  2. Step 2: Convert to fraction form
    542,159.40/813,239.10 = 148,175.40/x
  3. Step 3: Cross multiply
    542,159.40x = 813,239.10 × 148,175.40
  4. Step 4: Simplify right side
    542,159.40x = 120,502,028,938.14
  5. Step 5: Solve for x
    x = 120,502,028,938.14/542,159.40
  6. Step 6: Final answer
    x = 222,263.10

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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.