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Finding the Fourth Proportional to 522,095.20, 781,393.20 and 459,109.60

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Solution

The fourth proportional to 522,095.20, 781,393.20 and 459,109.60 is: 687,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,095.20 : 781,393.20 = 459,109.60 : x
  2. Step 2: Convert to fraction form
    522,095.20/781,393.20 = 459,109.60/x
  3. Step 3: Cross multiply
    522,095.20x = 781,393.20 × 459,109.60
  4. Step 4: Simplify right side
    522,095.20x = 358,745,119,494.72
  5. Step 5: Solve for x
    x = 358,745,119,494.72/522,095.20
  6. Step 6: Final answer
    x = 687,125.87

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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.