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Finding the Fourth Proportional to 319,220.46, 440,512.90 and 174,023.24

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Solution

The fourth proportional to 319,220.46, 440,512.90 and 174,023.24 is: 240,145.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,220.46 : 440,512.90 = 174,023.24 : x
  2. Step 2: Convert to fraction form
    319,220.46/440,512.90 = 174,023.24/x
  3. Step 3: Cross multiply
    319,220.46x = 440,512.90 × 174,023.24
  4. Step 4: Simplify right side
    319,220.46x = 76,659,479,482.17
  5. Step 5: Solve for x
    x = 76,659,479,482.17/319,220.46
  6. Step 6: Final answer
    x = 240,145.88

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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.