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Finding the Fourth Proportional to 70,996.48, 97,974.68 and 39,164.72

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Solution

The fourth proportional to 70,996.48, 97,974.68 and 39,164.72 is: 54,047.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,996.48 : 97,974.68 = 39,164.72 : x
  2. Step 2: Convert to fraction form
    70,996.48/97,974.68 = 39,164.72/x
  3. Step 3: Cross multiply
    70,996.48x = 97,974.68 × 39,164.72
  4. Step 4: Simplify right side
    70,996.48x = 3,837,150,909.29
  5. Step 5: Solve for x
    x = 3,837,150,909.29/70,996.48
  6. Step 6: Final answer
    x = 54,047.06

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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.