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Finding the Fourth Proportional to 54,909.80, 82,340.40 and 25,312.40

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Solution

The fourth proportional to 54,909.80, 82,340.40 and 25,312.40 is: 37,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,909.80 : 82,340.40 = 25,312.40 : x
  2. Step 2: Convert to fraction form
    54,909.80/82,340.40 = 25,312.40/x
  3. Step 3: Cross multiply
    54,909.80x = 82,340.40 × 25,312.40
  4. Step 4: Simplify right side
    54,909.80x = 2,084,233,140.96
  5. Step 5: Solve for x
    x = 2,084,233,140.96/54,909.80
  6. Step 6: Final answer
    x = 37,957.40

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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.