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Finding the Fourth Proportional to 272,707.52, 409,079.88 and 92,719.68

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Solution

The fourth proportional to 272,707.52, 409,079.88 and 92,719.68 is: 139,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,707.52 : 409,079.88 = 92,719.68 : x
  2. Step 2: Convert to fraction form
    272,707.52/409,079.88 = 92,719.68/x
  3. Step 3: Cross multiply
    272,707.52x = 409,079.88 × 92,719.68
  4. Step 4: Simplify right side
    272,707.52x = 37,929,755,568.04
  5. Step 5: Solve for x
    x = 37,929,755,568.04/272,707.52
  6. Step 6: Final answer
    x = 139,085.84

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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.