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Finding the Fourth Proportional to 101,643.92, 140,278.98 and 58,625.08

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Solution

The fourth proportional to 101,643.92, 140,278.98 and 58,625.08 is: 80,908.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,643.92 : 140,278.98 = 58,625.08 : x
  2. Step 2: Convert to fraction form
    101,643.92/140,278.98 = 58,625.08/x
  3. Step 3: Cross multiply
    101,643.92x = 140,278.98 × 58,625.08
  4. Step 4: Simplify right side
    101,643.92x = 8,223,866,424.82
  5. Step 5: Solve for x
    x = 8,223,866,424.82/101,643.92
  6. Step 6: Final answer
    x = 80,908.59

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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.