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Finding the Fourth Proportional to 48,789.44, 73,009.20 and 42,238.16

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Solution

The fourth proportional to 48,789.44, 73,009.20 and 42,238.16 is: 63,205.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,789.44 : 73,009.20 = 42,238.16 : x
  2. Step 2: Convert to fraction form
    48,789.44/73,009.20 = 42,238.16/x
  3. Step 3: Cross multiply
    48,789.44x = 73,009.20 × 42,238.16
  4. Step 4: Simplify right side
    48,789.44x = 3,083,774,271.07
  5. Step 5: Solve for x
    x = 3,083,774,271.07/48,789.44
  6. Step 6: Final answer
    x = 63,205.77

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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.