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Finding the Fourth Proportional to 317,960.16, 438,790.14 and 181,993.56

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Solution

The fourth proportional to 317,960.16, 438,790.14 and 181,993.56 is: 251,154.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,960.16 : 438,790.14 = 181,993.56 : x
  2. Step 2: Convert to fraction form
    317,960.16/438,790.14 = 181,993.56/x
  3. Step 3: Cross multiply
    317,960.16x = 438,790.14 × 181,993.56
  4. Step 4: Simplify right side
    317,960.16x = 79,856,979,671.50
  5. Step 5: Solve for x
    x = 79,856,979,671.50/317,960.16
  6. Step 6: Final answer
    x = 251,154.04

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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.