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Finding the Fourth Proportional to 38,659.86, 57,973.39 and 13,706.19

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Solution

The fourth proportional to 38,659.86, 57,973.39 and 13,706.19 is: 20,553.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,659.86 : 57,973.39 = 13,706.19 : x
  2. Step 2: Convert to fraction form
    38,659.86/57,973.39 = 13,706.19/x
  3. Step 3: Cross multiply
    38,659.86x = 57,973.39 × 13,706.19
  4. Step 4: Simplify right side
    38,659.86x = 794,594,264.02
  5. Step 5: Solve for x
    x = 794,594,264.02/38,659.86
  6. Step 6: Final answer
    x = 20,553.47

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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.