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Finding the Fourth Proportional to 85,153.84, 127,730.11 and 21,968.59

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Solution

The fourth proportional to 85,153.84, 127,730.11 and 21,968.59 is: 32,952.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,153.84 : 127,730.11 = 21,968.59 : x
  2. Step 2: Convert to fraction form
    85,153.84/127,730.11 = 21,968.59/x
  3. Step 3: Cross multiply
    85,153.84x = 127,730.11 × 21,968.59
  4. Step 4: Simplify right side
    85,153.84x = 2,806,049,928.70
  5. Step 5: Solve for x
    x = 2,806,049,928.70/85,153.84
  6. Step 6: Final answer
    x = 32,952.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.