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Finding the Fourth Proportional to 57,988.58, 86,873.76 and 45,470.60

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Solution

The fourth proportional to 57,988.58, 86,873.76 and 45,470.60 is: 68,120.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,988.58 : 86,873.76 = 45,470.60 : x
  2. Step 2: Convert to fraction form
    57,988.58/86,873.76 = 45,470.60/x
  3. Step 3: Cross multiply
    57,988.58x = 86,873.76 × 45,470.60
  4. Step 4: Simplify right side
    57,988.58x = 3,950,201,991.46
  5. Step 5: Solve for x
    x = 3,950,201,991.46/57,988.58
  6. Step 6: Final answer
    x = 68,120.34

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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.