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Finding the Fourth Proportional to 62,913.12, 86,820.72 and 34,619.42

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Solution

The fourth proportional to 62,913.12, 86,820.72 and 34,619.42 is: 47,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,913.12 : 86,820.72 = 34,619.42 : x
  2. Step 2: Convert to fraction form
    62,913.12/86,820.72 = 34,619.42/x
  3. Step 3: Cross multiply
    62,913.12x = 86,820.72 × 34,619.42
  4. Step 4: Simplify right side
    62,913.12x = 3,005,682,970.38
  5. Step 5: Solve for x
    x = 3,005,682,970.38/62,913.12
  6. Step 6: Final answer
    x = 47,775.14

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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.