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Finding the Fourth Proportional to 157,754.95, 217,676.13 and 93,215.20

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Solution

The fourth proportional to 157,754.95, 217,676.13 and 93,215.20 is: 128,621.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,754.95 : 217,676.13 = 93,215.20 : x
  2. Step 2: Convert to fraction form
    157,754.95/217,676.13 = 93,215.20/x
  3. Step 3: Cross multiply
    157,754.95x = 217,676.13 × 93,215.20
  4. Step 4: Simplify right side
    157,754.95x = 20,290,723,993.18
  5. Step 5: Solve for x
    x = 20,290,723,993.18/157,754.95
  6. Step 6: Final answer
    x = 128,621.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.