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Finding the Fourth Proportional to 522,714.60, 781,998.30 and 453,364.20

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Solution

The fourth proportional to 522,714.60, 781,998.30 and 453,364.20 is: 678,247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,714.60 : 781,998.30 = 453,364.20 : x
  2. Step 2: Convert to fraction form
    522,714.60/781,998.30 = 453,364.20/x
  3. Step 3: Cross multiply
    522,714.60x = 781,998.30 × 453,364.20
  4. Step 4: Simplify right side
    522,714.60x = 354,530,033,680.86
  5. Step 5: Solve for x
    x = 354,530,033,680.86/522,714.60
  6. Step 6: Final answer
    x = 678,247.81

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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.