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Finding the Fourth Proportional to 291,391.58, 402,149.17 and 170,525.66

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Solution

The fourth proportional to 291,391.58, 402,149.17 and 170,525.66 is: 235,342.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,391.58 : 402,149.17 = 170,525.66 : x
  2. Step 2: Convert to fraction form
    291,391.58/402,149.17 = 170,525.66/x
  3. Step 3: Cross multiply
    291,391.58x = 402,149.17 × 170,525.66
  4. Step 4: Simplify right side
    291,391.58x = 68,576,752,632.70
  5. Step 5: Solve for x
    x = 68,576,752,632.70/291,391.58
  6. Step 6: Final answer
    x = 235,342.26

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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.