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Finding the Fourth Proportional to 70,839.65, 97,758.57 and 38,573.77

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Solution

The fourth proportional to 70,839.65, 97,758.57 and 38,573.77 is: 53,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,839.65 : 97,758.57 = 38,573.77 : x
  2. Step 2: Convert to fraction form
    70,839.65/97,758.57 = 38,573.77/x
  3. Step 3: Cross multiply
    70,839.65x = 97,758.57 × 38,573.77
  4. Step 4: Simplify right side
    70,839.65x = 3,770,916,401.84
  5. Step 5: Solve for x
    x = 3,770,916,401.84/70,839.65
  6. Step 6: Final answer
    x = 53,231.72

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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.