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Finding the Fourth Proportional to 57,954.80, 86,937.42 and 20,510.84

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Solution

The fourth proportional to 57,954.80, 86,937.42 and 20,510.84 is: 30,768.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,954.80 : 86,937.42 = 20,510.84 : x
  2. Step 2: Convert to fraction form
    57,954.80/86,937.42 = 20,510.84/x
  3. Step 3: Cross multiply
    57,954.80x = 86,937.42 × 20,510.84
  4. Step 4: Simplify right side
    57,954.80x = 1,783,159,511.63
  5. Step 5: Solve for x
    x = 1,783,159,511.63/57,954.80
  6. Step 6: Final answer
    x = 30,768.11

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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.