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Finding the Fourth Proportional to 170,716.32, 255,731.52 and 85,068.84

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Solution

The fourth proportional to 170,716.32, 255,731.52 and 85,068.84 is: 127,432.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,716.32 : 255,731.52 = 85,068.84 : x
  2. Step 2: Convert to fraction form
    170,716.32/255,731.52 = 85,068.84/x
  3. Step 3: Cross multiply
    170,716.32x = 255,731.52 × 85,068.84
  4. Step 4: Simplify right side
    170,716.32x = 21,754,783,757.84
  5. Step 5: Solve for x
    x = 21,754,783,757.84/170,716.32
  6. Step 6: Final answer
    x = 127,432.36

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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.