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Finding the Fourth Proportional to 99,309.80, 148,765.25 and 45,926.95

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Solution

The fourth proportional to 99,309.80, 148,765.25 and 45,926.95 is: 68,798.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,309.80 : 148,765.25 = 45,926.95 : x
  2. Step 2: Convert to fraction form
    99,309.80/148,765.25 = 45,926.95/x
  3. Step 3: Cross multiply
    99,309.80x = 148,765.25 × 45,926.95
  4. Step 4: Simplify right side
    99,309.80x = 6,832,334,509.56
  5. Step 5: Solve for x
    x = 6,832,334,509.56/99,309.80
  6. Step 6: Final answer
    x = 68,798.19

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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.