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Finding the Fourth Proportional to 10,363.95, 15,539.85 and 7,081.02

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Solution

The fourth proportional to 10,363.95, 15,539.85 and 7,081.02 is: 10,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,363.95 : 15,539.85 = 7,081.02 : x
  2. Step 2: Convert to fraction form
    10,363.95/15,539.85 = 7,081.02/x
  3. Step 3: Cross multiply
    10,363.95x = 15,539.85 × 7,081.02
  4. Step 4: Simplify right side
    10,363.95x = 110,037,988.65
  5. Step 5: Solve for x
    x = 110,037,988.65/10,363.95
  6. Step 6: Final answer
    x = 10,617.38

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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.