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Finding the Fourth Proportional to 261,967.74, 392,622.80 and 112,031.66

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Solution

The fourth proportional to 261,967.74, 392,622.80 and 112,031.66 is: 167,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,967.74 : 392,622.80 = 112,031.66 : x
  2. Step 2: Convert to fraction form
    261,967.74/392,622.80 = 112,031.66/x
  3. Step 3: Cross multiply
    261,967.74x = 392,622.80 × 112,031.66
  4. Step 4: Simplify right side
    261,967.74x = 43,986,181,514.58
  5. Step 5: Solve for x
    x = 43,986,181,514.58/261,967.74
  6. Step 6: Final answer
    x = 167,906.86

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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.