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Finding the Fourth Proportional to 283,616.84, 391,386.22 and 154,556.46

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Solution

The fourth proportional to 283,616.84, 391,386.22 and 154,556.46 is: 213,285.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,616.84 : 391,386.22 = 154,556.46 : x
  2. Step 2: Convert to fraction form
    283,616.84/391,386.22 = 154,556.46/x
  3. Step 3: Cross multiply
    283,616.84x = 391,386.22 × 154,556.46
  4. Step 4: Simplify right side
    283,616.84x = 60,491,268,655.98
  5. Step 5: Solve for x
    x = 60,491,268,655.98/283,616.84
  6. Step 6: Final answer
    x = 213,285.18

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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.