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Finding the Fourth Proportional to 113,812.60, 170,702.70 and 38,936.20

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Solution

The fourth proportional to 113,812.60, 170,702.70 and 38,936.20 is: 58,398.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,812.60 : 170,702.70 = 38,936.20 : x
  2. Step 2: Convert to fraction form
    113,812.60/170,702.70 = 38,936.20/x
  3. Step 3: Cross multiply
    113,812.60x = 170,702.70 × 38,936.20
  4. Step 4: Simplify right side
    113,812.60x = 6,646,514,467.74
  5. Step 5: Solve for x
    x = 6,646,514,467.74/113,812.60
  6. Step 6: Final answer
    x = 58,398.76

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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.