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Finding the Fourth Proportional to 70,575.48, 105,769.14 and 37,287.72

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Solution

The fourth proportional to 70,575.48, 105,769.14 and 37,287.72 is: 55,881.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,575.48 : 105,769.14 = 37,287.72 : x
  2. Step 2: Convert to fraction form
    70,575.48/105,769.14 = 37,287.72/x
  3. Step 3: Cross multiply
    70,575.48x = 105,769.14 × 37,287.72
  4. Step 4: Simplify right side
    70,575.48x = 3,943,890,076.96
  5. Step 5: Solve for x
    x = 3,943,890,076.96/70,575.48
  6. Step 6: Final answer
    x = 55,881.87

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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.