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Finding the Fourth Proportional to 70,896.80, 97,841.88 and 39,065.66

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Solution

The fourth proportional to 70,896.80, 97,841.88 and 39,065.66 is: 53,912.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,896.80 : 97,841.88 = 39,065.66 : x
  2. Step 2: Convert to fraction form
    70,896.80/97,841.88 = 39,065.66/x
  3. Step 3: Cross multiply
    70,896.80x = 97,841.88 × 39,065.66
  4. Step 4: Simplify right side
    70,896.80x = 3,822,257,617.84
  5. Step 5: Solve for x
    x = 3,822,257,617.84/70,896.80
  6. Step 6: Final answer
    x = 53,912.98

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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.