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Finding the Fourth Proportional to 65,405.80, 98,081.82 and 25,957.48

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Solution

The fourth proportional to 65,405.80, 98,081.82 and 25,957.48 is: 38,925.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,405.80 : 98,081.82 = 25,957.48 : x
  2. Step 2: Convert to fraction form
    65,405.80/98,081.82 = 25,957.48/x
  3. Step 3: Cross multiply
    65,405.80x = 98,081.82 × 25,957.48
  4. Step 4: Simplify right side
    65,405.80x = 2,545,956,881.01
  5. Step 5: Solve for x
    x = 2,545,956,881.01/65,405.80
  6. Step 6: Final answer
    x = 38,925.55

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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.