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Finding the Fourth Proportional to 288,560.88, 398,215.34 and 157,741.22

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Solution

The fourth proportional to 288,560.88, 398,215.34 and 157,741.22 is: 217,683.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,560.88 : 398,215.34 = 157,741.22 : x
  2. Step 2: Convert to fraction form
    288,560.88/398,215.34 = 157,741.22/x
  3. Step 3: Cross multiply
    288,560.88x = 398,215.34 × 157,741.22
  4. Step 4: Simplify right side
    288,560.88x = 62,814,974,352.68
  5. Step 5: Solve for x
    x = 62,814,974,352.68/288,560.88
  6. Step 6: Final answer
    x = 217,683.61

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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.