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Finding the Fourth Proportional to 62,873.90, 94,322.49 and 20,756.91

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Solution

The fourth proportional to 62,873.90, 94,322.49 and 20,756.91 is: 31,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,873.90 : 94,322.49 = 20,756.91 : x
  2. Step 2: Convert to fraction form
    62,873.90/94,322.49 = 20,756.91/x
  3. Step 3: Cross multiply
    62,873.90x = 94,322.49 × 20,756.91
  4. Step 4: Simplify right side
    62,873.90x = 1,957,843,332.12
  5. Step 5: Solve for x
    x = 1,957,843,332.12/62,873.90
  6. Step 6: Final answer
    x = 31,139.21

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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.