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Finding the Fourth Proportional to 624,183.60, 936,275.40 and 519,121.20

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Solution

The fourth proportional to 624,183.60, 936,275.40 and 519,121.20 is: 778,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,183.60 : 936,275.40 = 519,121.20 : x
  2. Step 2: Convert to fraction form
    624,183.60/936,275.40 = 519,121.20/x
  3. Step 3: Cross multiply
    624,183.60x = 936,275.40 × 519,121.20
  4. Step 4: Simplify right side
    624,183.60x = 486,040,409,178.48
  5. Step 5: Solve for x
    x = 486,040,409,178.48/624,183.60
  6. Step 6: Final answer
    x = 778,681.80

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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.