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Finding the Fourth Proportional to 70,604.80, 97,431.70 and 38,338.15

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Solution

The fourth proportional to 70,604.80, 97,431.70 and 38,338.15 is: 52,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,604.80 : 97,431.70 = 38,338.15 : x
  2. Step 2: Convert to fraction form
    70,604.80/97,431.70 = 38,338.15/x
  3. Step 3: Cross multiply
    70,604.80x = 97,431.70 × 38,338.15
  4. Step 4: Simplify right side
    70,604.80x = 3,735,351,129.36
  5. Step 5: Solve for x
    x = 3,735,351,129.36/70,604.80
  6. Step 6: Final answer
    x = 52,905.06

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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.