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Finding the Fourth Proportional to 66,218.00, 99,270.97 and 28,749.76

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Solution

The fourth proportional to 66,218.00, 99,270.97 and 28,749.76 is: 43,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,218.00 : 99,270.97 = 28,749.76 : x
  2. Step 2: Convert to fraction form
    66,218.00/99,270.97 = 28,749.76/x
  3. Step 3: Cross multiply
    66,218.00x = 99,270.97 × 28,749.76
  4. Step 4: Simplify right side
    66,218.00x = 2,854,016,242.42
  5. Step 5: Solve for x
    x = 2,854,016,242.42/66,218.00
  6. Step 6: Final answer
    x = 43,100.31

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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.