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Finding the Fourth Proportional to 48,660.51, 72,990.63 and 11,724.51

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Solution

The fourth proportional to 48,660.51, 72,990.63 and 11,724.51 is: 17,586.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,660.51 : 72,990.63 = 11,724.51 : x
  2. Step 2: Convert to fraction form
    48,660.51/72,990.63 = 11,724.51/x
  3. Step 3: Cross multiply
    48,660.51x = 72,990.63 × 11,724.51
  4. Step 4: Simplify right side
    48,660.51x = 855,779,371.34
  5. Step 5: Solve for x
    x = 855,779,371.34/48,660.51
  6. Step 6: Final answer
    x = 17,586.73

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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.