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Finding the Fourth Proportional to 156,182.53, 215,425.11 and 98,894.74

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Solution

The fourth proportional to 156,182.53, 215,425.11 and 98,894.74 is: 136,407.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,182.53 : 215,425.11 = 98,894.74 : x
  2. Step 2: Convert to fraction form
    156,182.53/215,425.11 = 98,894.74/x
  3. Step 3: Cross multiply
    156,182.53x = 215,425.11 × 98,894.74
  4. Step 4: Simplify right side
    156,182.53x = 21,304,410,242.92
  5. Step 5: Solve for x
    x = 21,304,410,242.92/156,182.53
  6. Step 6: Final answer
    x = 136,407.13

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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.