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Finding the Fourth Proportional to 61,668.56, 85,031.66 and 45,559.19

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Solution

The fourth proportional to 61,668.56, 85,031.66 and 45,559.19 is: 62,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,668.56 : 85,031.66 = 45,559.19 : x
  2. Step 2: Convert to fraction form
    61,668.56/85,031.66 = 45,559.19/x
  3. Step 3: Cross multiply
    61,668.56x = 85,031.66 × 45,559.19
  4. Step 4: Simplify right side
    61,668.56x = 3,873,972,901.00
  5. Step 5: Solve for x
    x = 3,873,972,901.00/61,668.56
  6. Step 6: Final answer
    x = 62,819.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.