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Finding the Fourth Proportional to 170,860.70, 256,291.05 and 153,947.90

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Solution

The fourth proportional to 170,860.70, 256,291.05 and 153,947.90 is: 230,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,860.70 : 256,291.05 = 153,947.90 : x
  2. Step 2: Convert to fraction form
    170,860.70/256,291.05 = 153,947.90/x
  3. Step 3: Cross multiply
    170,860.70x = 256,291.05 × 153,947.90
  4. Step 4: Simplify right side
    170,860.70x = 39,455,468,936.30
  5. Step 5: Solve for x
    x = 39,455,468,936.30/170,860.70
  6. Step 6: Final answer
    x = 230,921.85

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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.