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Finding the Fourth Proportional to 89,569.80, 134,322.30 and 36,239.40

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Solution

The fourth proportional to 89,569.80, 134,322.30 and 36,239.40 is: 54,345.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,569.80 : 134,322.30 = 36,239.40 : x
  2. Step 2: Convert to fraction form
    89,569.80/134,322.30 = 36,239.40/x
  3. Step 3: Cross multiply
    89,569.80x = 134,322.30 × 36,239.40
  4. Step 4: Simplify right side
    89,569.80x = 4,867,759,558.62
  5. Step 5: Solve for x
    x = 4,867,759,558.62/89,569.80
  6. Step 6: Final answer
    x = 54,345.99

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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.