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Finding the Fourth Proportional to 623,402.40, 935,103.60 and 498,986.40

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Solution

The fourth proportional to 623,402.40, 935,103.60 and 498,986.40 is: 748,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,402.40 : 935,103.60 = 498,986.40 : x
  2. Step 2: Convert to fraction form
    623,402.40/935,103.60 = 498,986.40/x
  3. Step 3: Cross multiply
    623,402.40x = 935,103.60 × 498,986.40
  4. Step 4: Simplify right side
    623,402.40x = 466,603,978,991.04
  5. Step 5: Solve for x
    x = 466,603,978,991.04/623,402.40
  6. Step 6: Final answer
    x = 748,479.60

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Half scale
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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.