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Finding the Fourth Proportional to 171,856.22, 257,750.93 and 86,444.33

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Solution

The fourth proportional to 171,856.22, 257,750.93 and 86,444.33 is: 129,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,856.22 : 257,750.93 = 86,444.33 : x
  2. Step 2: Convert to fraction form
    171,856.22/257,750.93 = 86,444.33/x
  3. Step 3: Cross multiply
    171,856.22x = 257,750.93 × 86,444.33
  4. Step 4: Simplify right side
    171,856.22x = 22,281,105,378.08
  5. Step 5: Solve for x
    x = 22,281,105,378.08/171,856.22
  6. Step 6: Final answer
    x = 129,649.69

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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.