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Finding the Fourth Proportional to 67,643.80, 101,354.87 and 36,020.28

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Solution

The fourth proportional to 67,643.80, 101,354.87 and 36,020.28 is: 53,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,643.80 : 101,354.87 = 36,020.28 : x
  2. Step 2: Convert to fraction form
    67,643.80/101,354.87 = 36,020.28/x
  3. Step 3: Cross multiply
    67,643.80x = 101,354.87 × 36,020.28
  4. Step 4: Simplify right side
    67,643.80x = 3,650,830,796.76
  5. Step 5: Solve for x
    x = 3,650,830,796.76/67,643.80
  6. Step 6: Final answer
    x = 53,971.40

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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.