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Finding the Fourth Proportional to 283,707.88, 391,511.55 and 154,647.58

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Solution

The fourth proportional to 283,707.88, 391,511.55 and 154,647.58 is: 213,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,707.88 : 391,511.55 = 154,647.58 : x
  2. Step 2: Convert to fraction form
    283,707.88/391,511.55 = 154,647.58/x
  3. Step 3: Cross multiply
    283,707.88x = 391,511.55 × 154,647.58
  4. Step 4: Simplify right side
    283,707.88x = 60,546,313,749.55
  5. Step 5: Solve for x
    x = 60,546,313,749.55/283,707.88
  6. Step 6: Final answer
    x = 213,410.76

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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.