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Finding the Fourth Proportional to 38,429.80, 57,644.70 and 17,693.80

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Solution

The fourth proportional to 38,429.80, 57,644.70 and 17,693.80 is: 26,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,429.80 : 57,644.70 = 17,693.80 : x
  2. Step 2: Convert to fraction form
    38,429.80/57,644.70 = 17,693.80/x
  3. Step 3: Cross multiply
    38,429.80x = 57,644.70 × 17,693.80
  4. Step 4: Simplify right side
    38,429.80x = 1,019,953,792.86
  5. Step 5: Solve for x
    x = 1,019,953,792.86/38,429.80
  6. Step 6: Final answer
    x = 26,540.70

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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.