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Finding the Fourth Proportional to 171,103.86, 256,281.66 and 86,719.14

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Solution

The fourth proportional to 171,103.86, 256,281.66 and 86,719.14 is: 129,889.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,103.86 : 256,281.66 = 86,719.14 : x
  2. Step 2: Convert to fraction form
    171,103.86/256,281.66 = 86,719.14/x
  3. Step 3: Cross multiply
    171,103.86x = 256,281.66 × 86,719.14
  4. Step 4: Simplify right side
    171,103.86x = 22,224,525,152.97
  5. Step 5: Solve for x
    x = 22,224,525,152.97/171,103.86
  6. Step 6: Final answer
    x = 129,889.09

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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.