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Finding the Fourth Proportional to 73,689.12, 110,619.54 and 36,280.08

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Solution

The fourth proportional to 73,689.12, 110,619.54 and 36,280.08 is: 54,462.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,689.12 : 110,619.54 = 36,280.08 : x
  2. Step 2: Convert to fraction form
    73,689.12/110,619.54 = 36,280.08/x
  3. Step 3: Cross multiply
    73,689.12x = 110,619.54 × 36,280.08
  4. Step 4: Simplify right side
    73,689.12x = 4,013,285,760.76
  5. Step 5: Solve for x
    x = 4,013,285,760.76/73,689.12
  6. Step 6: Final answer
    x = 54,462.39

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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.