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Finding the Fourth Proportional to 70,932.75, 97,887.34 and 38,667.64

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Solution

The fourth proportional to 70,932.75, 97,887.34 and 38,667.64 is: 53,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,932.75 : 97,887.34 = 38,667.64 : x
  2. Step 2: Convert to fraction form
    70,932.75/97,887.34 = 38,667.64/x
  3. Step 3: Cross multiply
    70,932.75x = 97,887.34 × 38,667.64
  4. Step 4: Simplify right side
    70,932.75x = 3,785,071,740.90
  5. Step 5: Solve for x
    x = 3,785,071,740.90/70,932.75
  6. Step 6: Final answer
    x = 53,361.41

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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.