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Finding the Fourth Proportional to 280,185.60, 386,685.91 and 171,353.60

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Solution

The fourth proportional to 280,185.60, 386,685.91 and 171,353.60 is: 236,486.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,185.60 : 386,685.91 = 171,353.60 : x
  2. Step 2: Convert to fraction form
    280,185.60/386,685.91 = 171,353.60/x
  3. Step 3: Cross multiply
    280,185.60x = 386,685.91 × 171,353.60
  4. Step 4: Simplify right side
    280,185.60x = 66,260,022,747.78
  5. Step 5: Solve for x
    x = 66,260,022,747.78/280,185.60
  6. Step 6: Final answer
    x = 236,486.18

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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.