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Finding the Fourth Proportional to 88,728.90, 133,093.35 and 26,399.40

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Solution

The fourth proportional to 88,728.90, 133,093.35 and 26,399.40 is: 39,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,728.90 : 133,093.35 = 26,399.40 : x
  2. Step 2: Convert to fraction form
    88,728.90/133,093.35 = 26,399.40/x
  3. Step 3: Cross multiply
    88,728.90x = 133,093.35 × 26,399.40
  4. Step 4: Simplify right side
    88,728.90x = 3,513,584,583.99
  5. Step 5: Solve for x
    x = 3,513,584,583.99/88,728.90
  6. Step 6: Final answer
    x = 39,599.10

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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.