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Finding the Fourth Proportional to 124,118.71, 171,284.57 and 67,530.49

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Solution

The fourth proportional to 124,118.71, 171,284.57 and 67,530.49 is: 93,192.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,118.71 : 171,284.57 = 67,530.49 : x
  2. Step 2: Convert to fraction form
    124,118.71/171,284.57 = 67,530.49/x
  3. Step 3: Cross multiply
    124,118.71x = 171,284.57 × 67,530.49
  4. Step 4: Simplify right side
    124,118.71x = 11,566,930,941.54
  5. Step 5: Solve for x
    x = 11,566,930,941.54/124,118.71
  6. Step 6: Final answer
    x = 93,192.48

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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.