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Finding the Fourth Proportional to 62,969.76, 94,468.50 and 20,862.90

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Solution

The fourth proportional to 62,969.76, 94,468.50 and 20,862.90 is: 31,298.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,969.76 : 94,468.50 = 20,862.90 : x
  2. Step 2: Convert to fraction form
    62,969.76/94,468.50 = 20,862.90/x
  3. Step 3: Cross multiply
    62,969.76x = 94,468.50 × 20,862.90
  4. Step 4: Simplify right side
    62,969.76x = 1,970,886,868.65
  5. Step 5: Solve for x
    x = 1,970,886,868.65/62,969.76
  6. Step 6: Final answer
    x = 31,298.94

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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.