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Finding the Fourth Proportional to 865,680.60, 1,298,520.90 and 533,443.80

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Solution

The fourth proportional to 865,680.60, 1,298,520.90 and 533,443.80 is: 800,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,680.60 : 1,298,520.90 = 533,443.80 : x
  2. Step 2: Convert to fraction form
    865,680.60/1,298,520.90 = 533,443.80/x
  3. Step 3: Cross multiply
    865,680.60x = 1,298,520.90 × 533,443.80
  4. Step 4: Simplify right side
    865,680.60x = 692,687,923,275.42
  5. Step 5: Solve for x
    x = 692,687,923,275.42/865,680.60
  6. Step 6: Final answer
    x = 800,165.70

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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.