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Finding the Fourth Proportional to 73,959.84, 110,923.20 and 21,357.60

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Solution

The fourth proportional to 73,959.84, 110,923.20 and 21,357.60 is: 32,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,959.84 : 110,923.20 = 21,357.60 : x
  2. Step 2: Convert to fraction form
    73,959.84/110,923.20 = 21,357.60/x
  3. Step 3: Cross multiply
    73,959.84x = 110,923.20 × 21,357.60
  4. Step 4: Simplify right side
    73,959.84x = 2,369,053,336.32
  5. Step 5: Solve for x
    x = 2,369,053,336.32/73,959.84
  6. Step 6: Final answer
    x = 32,031.62

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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.