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Finding the Fourth Proportional to 124,576.74, 186,919.86 and 65,398.68

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Solution

The fourth proportional to 124,576.74, 186,919.86 and 65,398.68 is: 98,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,576.74 : 186,919.86 = 65,398.68 : x
  2. Step 2: Convert to fraction form
    124,576.74/186,919.86 = 65,398.68/x
  3. Step 3: Cross multiply
    124,576.74x = 186,919.86 × 65,398.68
  4. Step 4: Simplify right side
    124,576.74x = 12,224,312,109.78
  5. Step 5: Solve for x
    x = 12,224,312,109.78/124,576.74
  6. Step 6: Final answer
    x = 98,126.76

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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.