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Finding the Fourth Proportional to 95,985.40, 144,042.90 and 53,865.40

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Solution

The fourth proportional to 95,985.40, 144,042.90 and 53,865.40 is: 80,834.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,985.40 : 144,042.90 = 53,865.40 : x
  2. Step 2: Convert to fraction form
    95,985.40/144,042.90 = 53,865.40/x
  3. Step 3: Cross multiply
    95,985.40x = 144,042.90 × 53,865.40
  4. Step 4: Simplify right side
    95,985.40x = 7,758,928,425.66
  5. Step 5: Solve for x
    x = 7,758,928,425.66/95,985.40
  6. Step 6: Final answer
    x = 80,834.46

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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.