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Finding the Fourth Proportional to 406,454.16, 561,180.48 and 253,724.88

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Solution

The fourth proportional to 406,454.16, 561,180.48 and 253,724.88 is: 350,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,454.16 : 561,180.48 = 253,724.88 : x
  2. Step 2: Convert to fraction form
    406,454.16/561,180.48 = 253,724.88/x
  3. Step 3: Cross multiply
    406,454.16x = 561,180.48 × 253,724.88
  4. Step 4: Simplify right side
    406,454.16x = 142,385,449,946.34
  5. Step 5: Solve for x
    x = 142,385,449,946.34/406,454.16
  6. Step 6: Final answer
    x = 350,311.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.