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Finding the Fourth Proportional to 99,768.88, 149,538.60 and 43,595.92

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Solution

The fourth proportional to 99,768.88, 149,538.60 and 43,595.92 is: 65,343.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,768.88 : 149,538.60 = 43,595.92 : x
  2. Step 2: Convert to fraction form
    99,768.88/149,538.60 = 43,595.92/x
  3. Step 3: Cross multiply
    99,768.88x = 149,538.60 × 43,595.92
  4. Step 4: Simplify right side
    99,768.88x = 6,519,272,842.51
  5. Step 5: Solve for x
    x = 6,519,272,842.51/99,768.88
  6. Step 6: Final answer
    x = 65,343.75

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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.