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Finding the Fourth Proportional to 132,576.74, 182,959.74 and 72,151.28

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Solution

The fourth proportional to 132,576.74, 182,959.74 and 72,151.28 is: 99,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,576.74 : 182,959.74 = 72,151.28 : x
  2. Step 2: Convert to fraction form
    132,576.74/182,959.74 = 72,151.28/x
  3. Step 3: Cross multiply
    132,576.74x = 182,959.74 × 72,151.28
  4. Step 4: Simplify right side
    132,576.74x = 13,200,779,429.47
  5. Step 5: Solve for x
    x = 13,200,779,429.47/132,576.74
  6. Step 6: Final answer
    x = 99,570.86

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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.