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Finding the Fourth Proportional to 57,846.40, 86,760.85 and 19,901.45

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Solution

The fourth proportional to 57,846.40, 86,760.85 and 19,901.45 is: 29,849.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,846.40 : 86,760.85 = 19,901.45 : x
  2. Step 2: Convert to fraction form
    57,846.40/86,760.85 = 19,901.45/x
  3. Step 3: Cross multiply
    57,846.40x = 86,760.85 × 19,901.45
  4. Step 4: Simplify right side
    57,846.40x = 1,726,666,378.69
  5. Step 5: Solve for x
    x = 1,726,666,378.69/57,846.40
  6. Step 6: Final answer
    x = 29,849.16

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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.