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Finding the Fourth Proportional to 74,581.62, 102,924.99 and 42,760.50

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Solution

The fourth proportional to 74,581.62, 102,924.99 and 42,760.50 is: 59,010.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,581.62 : 102,924.99 = 42,760.50 : x
  2. Step 2: Convert to fraction form
    74,581.62/102,924.99 = 42,760.50/x
  3. Step 3: Cross multiply
    74,581.62x = 102,924.99 × 42,760.50
  4. Step 4: Simplify right side
    74,581.62x = 4,401,124,034.90
  5. Step 5: Solve for x
    x = 4,401,124,034.90/74,581.62
  6. Step 6: Final answer
    x = 59,010.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.