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Finding the Fourth Proportional to 192,919.32, 266,321.07 and 128,495.76

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Solution

The fourth proportional to 192,919.32, 266,321.07 and 128,495.76 is: 177,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,919.32 : 266,321.07 = 128,495.76 : x
  2. Step 2: Convert to fraction form
    192,919.32/266,321.07 = 128,495.76/x
  3. Step 3: Cross multiply
    192,919.32x = 266,321.07 × 128,495.76
  4. Step 4: Simplify right side
    192,919.32x = 34,221,128,293.66
  5. Step 5: Solve for x
    x = 34,221,128,293.66/192,919.32
  6. Step 6: Final answer
    x = 177,385.70

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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.