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Finding the Fourth Proportional to 624,105.60, 936,158.40 and 519,129.60

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Solution

The fourth proportional to 624,105.60, 936,158.40 and 519,129.60 is: 778,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,105.60 : 936,158.40 = 519,129.60 : x
  2. Step 2: Convert to fraction form
    624,105.60/936,158.40 = 519,129.60/x
  3. Step 3: Cross multiply
    624,105.60x = 936,158.40 × 519,129.60
  4. Step 4: Simplify right side
    624,105.60x = 485,987,535,728.64
  5. Step 5: Solve for x
    x = 485,987,535,728.64/624,105.60
  6. Step 6: Final answer
    x = 778,694.40

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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.