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Finding the Fourth Proportional to 283,886.79, 391,764.15 and 154,825.55

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Solution

The fourth proportional to 283,886.79, 391,764.15 and 154,825.55 is: 213,659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,886.79 : 391,764.15 = 154,825.55 : x
  2. Step 2: Convert to fraction form
    283,886.79/391,764.15 = 154,825.55/x
  3. Step 3: Cross multiply
    283,886.79x = 391,764.15 × 154,825.55
  4. Step 4: Simplify right side
    283,886.79x = 60,655,097,261.08
  5. Step 5: Solve for x
    x = 60,655,097,261.08/283,886.79
  6. Step 6: Final answer
    x = 213,659.46

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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.