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Finding the Fourth Proportional to 407,868.66, 611,890.54 and 171,074.88

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Solution

The fourth proportional to 407,868.66, 611,890.54 and 171,074.88 is: 256,649.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,868.66 : 611,890.54 = 171,074.88 : x
  2. Step 2: Convert to fraction form
    407,868.66/611,890.54 = 171,074.88/x
  3. Step 3: Cross multiply
    407,868.66x = 611,890.54 × 171,074.88
  4. Step 4: Simplify right side
    407,868.66x = 104,679,100,275.95
  5. Step 5: Solve for x
    x = 104,679,100,275.95/407,868.66
  6. Step 6: Final answer
    x = 256,649.04

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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.