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Finding the Fourth Proportional to 73,966.60, 111,036.30 and 42,401.80

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Solution

The fourth proportional to 73,966.60, 111,036.30 and 42,401.80 is: 63,652.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,966.60 : 111,036.30 = 42,401.80 : x
  2. Step 2: Convert to fraction form
    73,966.60/111,036.30 = 42,401.80/x
  3. Step 3: Cross multiply
    73,966.60x = 111,036.30 × 42,401.80
  4. Step 4: Simplify right side
    73,966.60x = 4,708,138,985.34
  5. Step 5: Solve for x
    x = 4,708,138,985.34/73,966.60
  6. Step 6: Final answer
    x = 63,652.23

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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.