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Finding the Fourth Proportional to 70,645.98, 97,490.94 and 38,380.28

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Solution

The fourth proportional to 70,645.98, 97,490.94 and 38,380.28 is: 52,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,645.98 : 97,490.94 = 38,380.28 : x
  2. Step 2: Convert to fraction form
    70,645.98/97,490.94 = 38,380.28/x
  3. Step 3: Cross multiply
    70,645.98x = 97,490.94 × 38,380.28
  4. Step 4: Simplify right side
    70,645.98x = 3,741,729,574.66
  5. Step 5: Solve for x
    x = 3,741,729,574.66/70,645.98
  6. Step 6: Final answer
    x = 52,964.51

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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.