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Finding the Fourth Proportional to 623,862.40, 935,793.60 and 340,427.20

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Solution

The fourth proportional to 623,862.40, 935,793.60 and 340,427.20 is: 510,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,862.40 : 935,793.60 = 340,427.20 : x
  2. Step 2: Convert to fraction form
    623,862.40/935,793.60 = 340,427.20/x
  3. Step 3: Cross multiply
    623,862.40x = 935,793.60 × 340,427.20
  4. Step 4: Simplify right side
    623,862.40x = 318,569,595,025.92
  5. Step 5: Solve for x
    x = 318,569,595,025.92/623,862.40
  6. Step 6: Final answer
    x = 510,640.80

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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.