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Finding the Fourth Proportional to 70,891.77, 97,835.01 and 39,060.66

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Solution

The fourth proportional to 70,891.77, 97,835.01 and 39,060.66 is: 53,906.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,891.77 : 97,835.01 = 39,060.66 : x
  2. Step 2: Convert to fraction form
    70,891.77/97,835.01 = 39,060.66/x
  3. Step 3: Cross multiply
    70,891.77x = 97,835.01 × 39,060.66
  4. Step 4: Simplify right side
    70,891.77x = 3,821,500,061.71
  5. Step 5: Solve for x
    x = 3,821,500,061.71/70,891.77
  6. Step 6: Final answer
    x = 53,906.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.