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Finding the Fourth Proportional to 171,158.12, 256,581.66 and 77,612.84

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Solution

The fourth proportional to 171,158.12, 256,581.66 and 77,612.84 is: 116,348.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,158.12 : 256,581.66 = 77,612.84 : x
  2. Step 2: Convert to fraction form
    171,158.12/256,581.66 = 77,612.84/x
  3. Step 3: Cross multiply
    171,158.12x = 256,581.66 × 77,612.84
  4. Step 4: Simplify right side
    171,158.12x = 19,914,031,324.51
  5. Step 5: Solve for x
    x = 19,914,031,324.51/171,158.12
  6. Step 6: Final answer
    x = 116,348.74

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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.