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Finding the Fourth Proportional to 170,780.40, 256,170.60 and 65,601.90

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Solution

The fourth proportional to 170,780.40, 256,170.60 and 65,601.90 is: 98,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,780.40 : 256,170.60 = 65,601.90 : x
  2. Step 2: Convert to fraction form
    170,780.40/256,170.60 = 65,601.90/x
  3. Step 3: Cross multiply
    170,780.40x = 256,170.60 × 65,601.90
  4. Step 4: Simplify right side
    170,780.40x = 16,805,278,084.14
  5. Step 5: Solve for x
    x = 16,805,278,084.14/170,780.40
  6. Step 6: Final answer
    x = 98,402.85

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1.5x scale

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.