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Finding the Fourth Proportional to 62,672.75, 86,488.40 and 34,378.51

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Solution

The fourth proportional to 62,672.75, 86,488.40 and 34,378.51 is: 47,442.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,672.75 : 86,488.40 = 34,378.51 : x
  2. Step 2: Convert to fraction form
    62,672.75/86,488.40 = 34,378.51/x
  3. Step 3: Cross multiply
    62,672.75x = 86,488.40 × 34,378.51
  4. Step 4: Simplify right side
    62,672.75x = 2,973,341,719.95
  5. Step 5: Solve for x
    x = 2,973,341,719.95/62,672.75
  6. Step 6: Final answer
    x = 47,442.34

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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.