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Finding the Fourth Proportional to 99,645.80, 149,475.98 and 40,482.59

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Solution

The fourth proportional to 99,645.80, 149,475.98 and 40,482.59 is: 60,726.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645.80 : 149,475.98 = 40,482.59 : x
  2. Step 2: Convert to fraction form
    99,645.80/149,475.98 = 40,482.59/x
  3. Step 3: Cross multiply
    99,645.80x = 149,475.98 × 40,482.59
  4. Step 4: Simplify right side
    99,645.80x = 6,051,174,167.01
  5. Step 5: Solve for x
    x = 6,051,174,167.01/99,645.80
  6. Step 6: Final answer
    x = 60,726.84

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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.