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Finding the Fourth Proportional to 57,146.89, 85,719.40 and 15,593.89

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Solution

The fourth proportional to 57,146.89, 85,719.40 and 15,593.89 is: 23,390.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,146.89 : 85,719.40 = 15,593.89 : x
  2. Step 2: Convert to fraction form
    57,146.89/85,719.40 = 15,593.89/x
  3. Step 3: Cross multiply
    57,146.89x = 85,719.40 × 15,593.89
  4. Step 4: Simplify right side
    57,146.89x = 1,336,698,894.47
  5. Step 5: Solve for x
    x = 1,336,698,894.47/57,146.89
  6. Step 6: Final answer
    x = 23,390.58

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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.