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Finding the Fourth Proportional to 61,923.78, 85,452.05 and 35,065.72

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Solution

The fourth proportional to 61,923.78, 85,452.05 and 35,065.72 is: 48,389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,923.78 : 85,452.05 = 35,065.72 : x
  2. Step 2: Convert to fraction form
    61,923.78/85,452.05 = 35,065.72/x
  3. Step 3: Cross multiply
    61,923.78x = 85,452.05 × 35,065.72
  4. Step 4: Simplify right side
    61,923.78x = 2,996,437,175.29
  5. Step 5: Solve for x
    x = 2,996,437,175.29/61,923.78
  6. Step 6: Final answer
    x = 48,389.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.