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Finding the Fourth Proportional to 90,964.62, 136,477.91 and 55,496.95

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Solution

The fourth proportional to 90,964.62, 136,477.91 and 55,496.95 is: 83,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,964.62 : 136,477.91 = 55,496.95 : x
  2. Step 2: Convert to fraction form
    90,964.62/136,477.91 = 55,496.95/x
  3. Step 3: Cross multiply
    90,964.62x = 136,477.91 × 55,496.95
  4. Step 4: Simplify right side
    90,964.62x = 7,574,107,544.92
  5. Step 5: Solve for x
    x = 7,574,107,544.92/90,964.62
  6. Step 6: Final answer
    x = 83,264.32

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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.