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Finding the Fourth Proportional to 66,722.74, 100,058.93 and 21,732.33

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Solution

The fourth proportional to 66,722.74, 100,058.93 and 21,732.33 is: 32,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.74 : 100,058.93 = 21,732.33 : x
  2. Step 2: Convert to fraction form
    66,722.74/100,058.93 = 21,732.33/x
  3. Step 3: Cross multiply
    66,722.74x = 100,058.93 × 21,732.33
  4. Step 4: Simplify right side
    66,722.74x = 2,174,514,034.26
  5. Step 5: Solve for x
    x = 2,174,514,034.26/66,722.74
  6. Step 6: Final answer
    x = 32,590.30

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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.