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Finding the Fourth Proportional to 59,928.40, 89,914.20 and 57,768.40

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Solution

The fourth proportional to 59,928.40, 89,914.20 and 57,768.40 is: 86,673.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,928.40 : 89,914.20 = 57,768.40 : x
  2. Step 2: Convert to fraction form
    59,928.40/89,914.20 = 57,768.40/x
  3. Step 3: Cross multiply
    59,928.40x = 89,914.20 × 57,768.40
  4. Step 4: Simplify right side
    59,928.40x = 5,194,199,471.28
  5. Step 5: Solve for x
    x = 5,194,199,471.28/59,928.40
  6. Step 6: Final answer
    x = 86,673.42

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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.