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Finding the Fourth Proportional to 98,659.99, 147,965.38 and 38,700.65

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Solution

The fourth proportional to 98,659.99, 147,965.38 and 38,700.65 is: 58,041.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,659.99 : 147,965.38 = 38,700.65 : x
  2. Step 2: Convert to fraction form
    98,659.99/147,965.38 = 38,700.65/x
  3. Step 3: Cross multiply
    98,659.99x = 147,965.38 × 38,700.65
  4. Step 4: Simplify right side
    98,659.99x = 5,726,356,656.66
  5. Step 5: Solve for x
    x = 5,726,356,656.66/98,659.99
  6. Step 6: Final answer
    x = 58,041.33

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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.