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Finding the Fourth Proportional to 54,763.65, 75,581.64 and 30,892.55

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Solution

The fourth proportional to 54,763.65, 75,581.64 and 30,892.55 is: 42,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,763.65 : 75,581.64 = 30,892.55 : x
  2. Step 2: Convert to fraction form
    54,763.65/75,581.64 = 30,892.55/x
  3. Step 3: Cross multiply
    54,763.65x = 75,581.64 × 30,892.55
  4. Step 4: Simplify right side
    54,763.65x = 2,334,909,214.87
  5. Step 5: Solve for x
    x = 2,334,909,214.87/54,763.65
  6. Step 6: Final answer
    x = 42,636.11

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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.