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Finding the Fourth Proportional to 256,860.74, 354,539.06 and 149,451.52

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Solution

The fourth proportional to 256,860.74, 354,539.06 and 149,451.52 is: 206,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,860.74 : 354,539.06 = 149,451.52 : x
  2. Step 2: Convert to fraction form
    256,860.74/354,539.06 = 149,451.52/x
  3. Step 3: Cross multiply
    256,860.74x = 354,539.06 × 149,451.52
  4. Step 4: Simplify right side
    256,860.74x = 52,986,401,416.37
  5. Step 5: Solve for x
    x = 52,986,401,416.37/256,860.74
  6. Step 6: Final answer
    x = 206,284.55

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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.