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Finding the Fourth Proportional to 573,120.30, 859,680.45 and 519,976.20

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Solution

The fourth proportional to 573,120.30, 859,680.45 and 519,976.20 is: 779,964.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,120.30 : 859,680.45 = 519,976.20 : x
  2. Step 2: Convert to fraction form
    573,120.30/859,680.45 = 519,976.20/x
  3. Step 3: Cross multiply
    573,120.30x = 859,680.45 × 519,976.20
  4. Step 4: Simplify right side
    573,120.30x = 447,013,373,605.29
  5. Step 5: Solve for x
    x = 447,013,373,605.29/573,120.30
  6. Step 6: Final answer
    x = 779,964.30

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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.