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Finding the Fourth Proportional to 74,357.76, 111,528.48 and 21,767.76

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Solution

The fourth proportional to 74,357.76, 111,528.48 and 21,767.76 is: 32,649.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,357.76 : 111,528.48 = 21,767.76 : x
  2. Step 2: Convert to fraction form
    74,357.76/111,528.48 = 21,767.76/x
  3. Step 3: Cross multiply
    74,357.76x = 111,528.48 × 21,767.76
  4. Step 4: Simplify right side
    74,357.76x = 2,427,725,185.80
  5. Step 5: Solve for x
    x = 2,427,725,185.80/74,357.76
  6. Step 6: Final answer
    x = 32,649.25

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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.