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Finding the Fourth Proportional to 283,886.18, 391,763.28 and 154,824.92

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Solution

The fourth proportional to 283,886.18, 391,763.28 and 154,824.92 is: 213,658.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,886.18 : 391,763.28 = 154,824.92 : x
  2. Step 2: Convert to fraction form
    283,886.18/391,763.28 = 154,824.92/x
  3. Step 3: Cross multiply
    283,886.18x = 391,763.28 × 154,824.92
  4. Step 4: Simplify right side
    283,886.18x = 60,654,718,484.94
  5. Step 5: Solve for x
    x = 60,654,718,484.94/283,886.18
  6. Step 6: Final answer
    x = 213,658.58

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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.