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Finding the Fourth Proportional to 280,351.72, 386,827.62 and 161,096.68

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Solution

The fourth proportional to 280,351.72, 386,827.62 and 161,096.68 is: 222,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,351.72 : 386,827.62 = 161,096.68 : x
  2. Step 2: Convert to fraction form
    280,351.72/386,827.62 = 161,096.68/x
  3. Step 3: Cross multiply
    280,351.72x = 386,827.62 × 161,096.68
  4. Step 4: Simplify right side
    280,351.72x = 62,316,645,314.30
  5. Step 5: Solve for x
    x = 62,316,645,314.30/280,351.72
  6. Step 6: Final answer
    x = 222,280.23

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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.