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Finding the Fourth Proportional to 71,875.65, 107,694.28 and 43,710.51

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Solution

The fourth proportional to 71,875.65, 107,694.28 and 43,710.51 is: 65,493.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,875.65 : 107,694.28 = 43,710.51 : x
  2. Step 2: Convert to fraction form
    71,875.65/107,694.28 = 43,710.51/x
  3. Step 3: Cross multiply
    71,875.65x = 107,694.28 × 43,710.51
  4. Step 4: Simplify right side
    71,875.65x = 4,707,371,902.88
  5. Step 5: Solve for x
    x = 4,707,371,902.88/71,875.65
  6. Step 6: Final answer
    x = 65,493.28

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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.