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Finding the Fourth Proportional to 103,891.77, 143,374.86 and 58,571.46

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Solution

The fourth proportional to 103,891.77, 143,374.86 and 58,571.46 is: 80,830.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,891.77 : 143,374.86 = 58,571.46 : x
  2. Step 2: Convert to fraction form
    103,891.77/143,374.86 = 58,571.46/x
  3. Step 3: Cross multiply
    103,891.77x = 143,374.86 × 58,571.46
  4. Step 4: Simplify right side
    103,891.77x = 8,397,674,877.50
  5. Step 5: Solve for x
    x = 8,397,674,877.50/103,891.77
  6. Step 6: Final answer
    x = 80,830.99

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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.