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Finding the Fourth Proportional to 283,352.66, 391,036.21 and 154,296.12

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Solution

The fourth proportional to 283,352.66, 391,036.21 and 154,296.12 is: 212,933.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,352.66 : 391,036.21 = 154,296.12 : x
  2. Step 2: Convert to fraction form
    283,352.66/391,036.21 = 154,296.12/x
  3. Step 3: Cross multiply
    283,352.66x = 391,036.21 × 154,296.12
  4. Step 4: Simplify right side
    283,352.66x = 60,335,367,763.78
  5. Step 5: Solve for x
    x = 60,335,367,763.78/283,352.66
  6. Step 6: Final answer
    x = 212,933.84

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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.