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Finding the Fourth Proportional to 48,999.66, 73,482.21 and 21,282.54

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Solution

The fourth proportional to 48,999.66, 73,482.21 and 21,282.54 is: 31,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,999.66 : 73,482.21 = 21,282.54 : x
  2. Step 2: Convert to fraction form
    48,999.66/73,482.21 = 21,282.54/x
  3. Step 3: Cross multiply
    48,999.66x = 73,482.21 × 21,282.54
  4. Step 4: Simplify right side
    48,999.66x = 1,563,888,073.61
  5. Step 5: Solve for x
    x = 1,563,888,073.61/48,999.66
  6. Step 6: Final answer
    x = 31,916.30

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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.