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Finding the Fourth Proportional to 98,116.68, 135,397.26 and 55,672.68

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Solution

The fourth proportional to 98,116.68, 135,397.26 and 55,672.68 is: 76,826.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,116.68 : 135,397.26 = 55,672.68 : x
  2. Step 2: Convert to fraction form
    98,116.68/135,397.26 = 55,672.68/x
  3. Step 3: Cross multiply
    98,116.68x = 135,397.26 × 55,672.68
  4. Step 4: Simplify right side
    98,116.68x = 7,537,928,328.86
  5. Step 5: Solve for x
    x = 7,537,928,328.86/98,116.68
  6. Step 6: Final answer
    x = 76,826.17

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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.