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Finding the Fourth Proportional to 256,613.16, 354,150.66 and 149,173.80

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Solution

The fourth proportional to 256,613.16, 354,150.66 and 149,173.80 is: 205,874.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,613.16 : 354,150.66 = 149,173.80 : x
  2. Step 2: Convert to fraction form
    256,613.16/354,150.66 = 149,173.80/x
  3. Step 3: Cross multiply
    256,613.16x = 354,150.66 × 149,173.80
  4. Step 4: Simplify right side
    256,613.16x = 52,829,999,724.71
  5. Step 5: Solve for x
    x = 52,829,999,724.71/256,613.16
  6. Step 6: Final answer
    x = 205,874.09

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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.