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Finding the Fourth Proportional to 98,363.52, 135,734.67 and 58,075.20

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Solution

The fourth proportional to 98,363.52, 135,734.67 and 58,075.20 is: 80,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,363.52 : 135,734.67 = 58,075.20 : x
  2. Step 2: Convert to fraction form
    98,363.52/135,734.67 = 58,075.20/x
  3. Step 3: Cross multiply
    98,363.52x = 135,734.67 × 58,075.20
  4. Step 4: Simplify right side
    98,363.52x = 7,882,818,107.18
  5. Step 5: Solve for x
    x = 7,882,818,107.18/98,363.52
  6. Step 6: Final answer
    x = 80,139.65

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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.