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Finding the Fourth Proportional to 70,358.91, 97,091.67 and 38,521.65

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Solution

The fourth proportional to 70,358.91, 97,091.67 and 38,521.65 is: 53,157.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,358.91 : 97,091.67 = 38,521.65 : x
  2. Step 2: Convert to fraction form
    70,358.91/97,091.67 = 38,521.65/x
  3. Step 3: Cross multiply
    70,358.91x = 97,091.67 × 38,521.65
  4. Step 4: Simplify right side
    70,358.91x = 3,740,131,329.66
  5. Step 5: Solve for x
    x = 3,740,131,329.66/70,358.91
  6. Step 6: Final answer
    x = 53,157.89

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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.