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Finding the Fourth Proportional to 171,104.86, 256,283.16 and 86,720.14

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Solution

The fourth proportional to 171,104.86, 256,283.16 and 86,720.14 is: 129,890.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,104.86 : 256,283.16 = 86,720.14 : x
  2. Step 2: Convert to fraction form
    171,104.86/256,283.16 = 86,720.14/x
  3. Step 3: Cross multiply
    171,104.86x = 256,283.16 × 86,720.14
  4. Step 4: Simplify right side
    171,104.86x = 22,224,911,514.84
  5. Step 5: Solve for x
    x = 22,224,911,514.84/171,104.86
  6. Step 6: Final answer
    x = 129,890.59

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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.