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Finding the Fourth Proportional to 62,668.64, 86,488.20 and 34,379.80

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Solution

The fourth proportional to 62,668.64, 86,488.20 and 34,379.80 is: 47,447.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,668.64 : 86,488.20 = 34,379.80 : x
  2. Step 2: Convert to fraction form
    62,668.64/86,488.20 = 34,379.80/x
  3. Step 3: Cross multiply
    62,668.64x = 86,488.20 × 34,379.80
  4. Step 4: Simplify right side
    62,668.64x = 2,973,447,018.36
  5. Step 5: Solve for x
    x = 2,973,447,018.36/62,668.64
  6. Step 6: Final answer
    x = 47,447.13

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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.