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Finding the Fourth Proportional to 98,084.68, 134,932.10 and 85,930.42

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Solution

The fourth proportional to 98,084.68, 134,932.10 and 85,930.42 is: 118,211.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,084.68 : 134,932.10 = 85,930.42 : x
  2. Step 2: Convert to fraction form
    98,084.68/134,932.10 = 85,930.42/x
  3. Step 3: Cross multiply
    98,084.68x = 134,932.10 × 85,930.42
  4. Step 4: Simplify right side
    98,084.68x = 11,594,772,024.48
  5. Step 5: Solve for x
    x = 11,594,772,024.48/98,084.68
  6. Step 6: Final answer
    x = 118,211.86

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1.5x scale

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.