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Finding the Fourth Proportional to 171,079.28, 256,118.52 and 99,783.92

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Solution

The fourth proportional to 171,079.28, 256,118.52 and 99,783.92 is: 149,384.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,079.28 : 256,118.52 = 99,783.92 : x
  2. Step 2: Convert to fraction form
    171,079.28/256,118.52 = 99,783.92/x
  3. Step 3: Cross multiply
    171,079.28x = 256,118.52 × 99,783.92
  4. Step 4: Simplify right side
    171,079.28x = 25,556,509,910.20
  5. Step 5: Solve for x
    x = 25,556,509,910.20/171,079.28
  6. Step 6: Final answer
    x = 149,384.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.