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Finding the Fourth Proportional to 70,664.64, 97,516.56 and 38,399.04

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Solution

The fourth proportional to 70,664.64, 97,516.56 and 38,399.04 is: 52,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,664.64 : 97,516.56 = 38,399.04 : x
  2. Step 2: Convert to fraction form
    70,664.64/97,516.56 = 38,399.04/x
  3. Step 3: Cross multiply
    70,664.64x = 97,516.56 × 38,399.04
  4. Step 4: Simplify right side
    70,664.64x = 3,744,542,288.10
  5. Step 5: Solve for x
    x = 3,744,542,288.10/70,664.64
  6. Step 6: Final answer
    x = 52,990.33

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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.