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Finding the Fourth Proportional to 70,514.97, 105,673.01 and 38,939.25

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Solution

The fourth proportional to 70,514.97, 105,673.01 and 38,939.25 is: 58,353.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,514.97 : 105,673.01 = 38,939.25 : x
  2. Step 2: Convert to fraction form
    70,514.97/105,673.01 = 38,939.25/x
  3. Step 3: Cross multiply
    70,514.97x = 105,673.01 × 38,939.25
  4. Step 4: Simplify right side
    70,514.97x = 4,114,827,559.95
  5. Step 5: Solve for x
    x = 4,114,827,559.95/70,514.97
  6. Step 6: Final answer
    x = 58,353.96

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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.