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Finding the Fourth Proportional to 573,040.80, 859,561.20 and 515,960.10

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Solution

The fourth proportional to 573,040.80, 859,561.20 and 515,960.10 is: 773,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,040.80 : 859,561.20 = 515,960.10 : x
  2. Step 2: Convert to fraction form
    573,040.80/859,561.20 = 515,960.10/x
  3. Step 3: Cross multiply
    573,040.80x = 859,561.20 × 515,960.10
  4. Step 4: Simplify right side
    573,040.80x = 443,499,282,708.12
  5. Step 5: Solve for x
    x = 443,499,282,708.12/573,040.80
  6. Step 6: Final answer
    x = 773,940.15

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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.