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Finding the Fourth Proportional to 448,910.40, 674,143.20 and 238,958.40

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Solution

The fourth proportional to 448,910.40, 674,143.20 and 238,958.40 is: 358,851.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,910.40 : 674,143.20 = 238,958.40 : x
  2. Step 2: Convert to fraction form
    448,910.40/674,143.20 = 238,958.40/x
  3. Step 3: Cross multiply
    448,910.40x = 674,143.20 × 238,958.40
  4. Step 4: Simplify right side
    448,910.40x = 161,092,180,442.88
  5. Step 5: Solve for x
    x = 161,092,180,442.88/448,910.40
  6. Step 6: Final answer
    x = 358,851.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.