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Finding the Fourth Proportional to 70,238.54, 96,931.51 and 38,407.44

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Solution

The fourth proportional to 70,238.54, 96,931.51 and 38,407.44 is: 53,003.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,238.54 : 96,931.51 = 38,407.44 : x
  2. Step 2: Convert to fraction form
    70,238.54/96,931.51 = 38,407.44/x
  3. Step 3: Cross multiply
    70,238.54x = 96,931.51 × 38,407.44
  4. Step 4: Simplify right side
    70,238.54x = 3,722,891,257.31
  5. Step 5: Solve for x
    x = 3,722,891,257.31/70,238.54
  6. Step 6: Final answer
    x = 53,003.54

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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.