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Finding the Fourth Proportional to 624,177.60, 936,266.40 and 519,115.20

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Solution

The fourth proportional to 624,177.60, 936,266.40 and 519,115.20 is: 778,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,177.60 : 936,266.40 = 519,115.20 : x
  2. Step 2: Convert to fraction form
    624,177.60/936,266.40 = 519,115.20/x
  3. Step 3: Cross multiply
    624,177.60x = 936,266.40 × 519,115.20
  4. Step 4: Simplify right side
    624,177.60x = 486,030,119,489.28
  5. Step 5: Solve for x
    x = 486,030,119,489.28/624,177.60
  6. Step 6: Final answer
    x = 778,672.80

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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.