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Finding the Fourth Proportional to 69,206.92, 95,485.80 and 38,981.68

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Solution

The fourth proportional to 69,206.92, 95,485.80 and 38,981.68 is: 53,783.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,206.92 : 95,485.80 = 38,981.68 : x
  2. Step 2: Convert to fraction form
    69,206.92/95,485.80 = 38,981.68/x
  3. Step 3: Cross multiply
    69,206.92x = 95,485.80 × 38,981.68
  4. Step 4: Simplify right side
    69,206.92x = 3,722,196,900.14
  5. Step 5: Solve for x
    x = 3,722,196,900.14/69,206.92
  6. Step 6: Final answer
    x = 53,783.59

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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.