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Finding the Fourth Proportional to 656,400.60, 984,549.70 and 256,963.80

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Solution

The fourth proportional to 656,400.60, 984,549.70 and 256,963.80 is: 385,425.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,400.60 : 984,549.70 = 256,963.80 : x
  2. Step 2: Convert to fraction form
    656,400.60/984,549.70 = 256,963.80/x
  3. Step 3: Cross multiply
    656,400.60x = 984,549.70 × 256,963.80
  4. Step 4: Simplify right side
    656,400.60x = 252,993,632,200.86
  5. Step 5: Solve for x
    x = 252,993,632,200.86/656,400.60
  6. Step 6: Final answer
    x = 385,425.66

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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.