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Finding the Fourth Proportional to 48,782.79, 73,140.90 and 25,990.05

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Solution

The fourth proportional to 48,782.79, 73,140.90 and 25,990.05 is: 38,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,782.79 : 73,140.90 = 25,990.05 : x
  2. Step 2: Convert to fraction form
    48,782.79/73,140.90 = 25,990.05/x
  3. Step 3: Cross multiply
    48,782.79x = 73,140.90 × 25,990.05
  4. Step 4: Simplify right side
    48,782.79x = 1,900,935,648.05
  5. Step 5: Solve for x
    x = 1,900,935,648.05/48,782.79
  6. Step 6: Final answer
    x = 38,967.34

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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.