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Finding the Fourth Proportional to 281,893.59, 389,016.95 and 154,568.88

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Solution

The fourth proportional to 281,893.59, 389,016.95 and 154,568.88 is: 213,307.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,893.59 : 389,016.95 = 154,568.88 : x
  2. Step 2: Convert to fraction form
    281,893.59/389,016.95 = 154,568.88/x
  3. Step 3: Cross multiply
    281,893.59x = 389,016.95 × 154,568.88
  4. Step 4: Simplify right side
    281,893.59x = 60,129,913,489.67
  5. Step 5: Solve for x
    x = 60,129,913,489.67/281,893.59
  6. Step 6: Final answer
    x = 213,307.13

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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.