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Finding the Fourth Proportional to 326,691.90, 450,820.89 and 190,733.40

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Solution

The fourth proportional to 326,691.90, 450,820.89 and 190,733.40 is: 263,203.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,691.90 : 450,820.89 = 190,733.40 : x
  2. Step 2: Convert to fraction form
    326,691.90/450,820.89 = 190,733.40/x
  3. Step 3: Cross multiply
    326,691.90x = 450,820.89 × 190,733.40
  4. Step 4: Simplify right side
    326,691.90x = 85,986,601,140.73
  5. Step 5: Solve for x
    x = 85,986,601,140.73/326,691.90
  6. Step 6: Final answer
    x = 263,203.96

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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.