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Finding the Fourth Proportional to 59,381.78, 89,043.71 and 21,959.37

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Solution

The fourth proportional to 59,381.78, 89,043.71 and 21,959.37 is: 32,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,381.78 : 89,043.71 = 21,959.37 : x
  2. Step 2: Convert to fraction form
    59,381.78/89,043.71 = 21,959.37/x
  3. Step 3: Cross multiply
    59,381.78x = 89,043.71 × 21,959.37
  4. Step 4: Simplify right side
    59,381.78x = 1,955,343,664.27
  5. Step 5: Solve for x
    x = 1,955,343,664.27/59,381.78
  6. Step 6: Final answer
    x = 32,928.35

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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.