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Finding the Fourth Proportional to 256,605.62, 354,104.60 and 140,316.93

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Solution

The fourth proportional to 256,605.62, 354,104.60 and 140,316.93 is: 193,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,605.62 : 354,104.60 = 140,316.93 : x
  2. Step 2: Convert to fraction form
    256,605.62/354,104.60 = 140,316.93/x
  3. Step 3: Cross multiply
    256,605.62x = 354,104.60 × 140,316.93
  4. Step 4: Simplify right side
    256,605.62x = 49,686,869,669.29
  5. Step 5: Solve for x
    x = 49,686,869,669.29/256,605.62
  6. Step 6: Final answer
    x = 193,631.26

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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.