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Finding the Fourth Proportional to 623,862.60, 935,793.90 and 545,130.60

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Solution

The fourth proportional to 623,862.60, 935,793.90 and 545,130.60 is: 817,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,862.60 : 935,793.90 = 545,130.60 : x
  2. Step 2: Convert to fraction form
    623,862.60/935,793.90 = 545,130.60/x
  3. Step 3: Cross multiply
    623,862.60x = 935,793.90 × 545,130.60
  4. Step 4: Simplify right side
    623,862.60x = 510,129,890,183.34
  5. Step 5: Solve for x
    x = 510,129,890,183.34/623,862.60
  6. Step 6: Final answer
    x = 817,695.90

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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.