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Finding the Fourth Proportional to 52,772.76, 79,139.97 and 15,322.68

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Solution

The fourth proportional to 52,772.76, 79,139.97 and 15,322.68 is: 22,978.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,772.76 : 79,139.97 = 15,322.68 : x
  2. Step 2: Convert to fraction form
    52,772.76/79,139.97 = 15,322.68/x
  3. Step 3: Cross multiply
    52,772.76x = 79,139.97 × 15,322.68
  4. Step 4: Simplify right side
    52,772.76x = 1,212,636,435.52
  5. Step 5: Solve for x
    x = 1,212,636,435.52/52,772.76
  6. Step 6: Final answer
    x = 22,978.45

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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.