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Finding the Fourth Proportional to 70,443.91, 97,214.97 and 38,612.80

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Solution

The fourth proportional to 70,443.91, 97,214.97 and 38,612.80 is: 53,286.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,443.91 : 97,214.97 = 38,612.80 : x
  2. Step 2: Convert to fraction form
    70,443.91/97,214.97 = 38,612.80/x
  3. Step 3: Cross multiply
    70,443.91x = 97,214.97 × 38,612.80
  4. Step 4: Simplify right side
    70,443.91x = 3,753,742,193.62
  5. Step 5: Solve for x
    x = 3,753,742,193.62/70,443.91
  6. Step 6: Final answer
    x = 53,286.97

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1.5x scale

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.