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Finding the Fourth Proportional to 360,959.86, 541,438.30 and 91,088.61

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Solution

The fourth proportional to 360,959.86, 541,438.30 and 91,088.61 is: 136,632.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,959.86 : 541,438.30 = 91,088.61 : x
  2. Step 2: Convert to fraction form
    360,959.86/541,438.30 = 91,088.61/x
  3. Step 3: Cross multiply
    360,959.86x = 541,438.30 × 91,088.61
  4. Step 4: Simplify right side
    360,959.86x = 49,318,862,147.76
  5. Step 5: Solve for x
    x = 49,318,862,147.76/360,959.86
  6. Step 6: Final answer
    x = 136,632.54

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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.