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Finding the Fourth Proportional to 38,656.74, 57,985.65 and 10,954.74

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Solution

The fourth proportional to 38,656.74, 57,985.65 and 10,954.74 is: 16,432.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,656.74 : 57,985.65 = 10,954.74 : x
  2. Step 2: Convert to fraction form
    38,656.74/57,985.65 = 10,954.74/x
  3. Step 3: Cross multiply
    38,656.74x = 57,985.65 × 10,954.74
  4. Step 4: Simplify right side
    38,656.74x = 635,217,719.48
  5. Step 5: Solve for x
    x = 635,217,719.48/38,656.74
  6. Step 6: Final answer
    x = 16,432.26

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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.