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Finding the Fourth Proportional to 90,202.53, 124,477.61 and 49,913.88

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Solution

The fourth proportional to 90,202.53, 124,477.61 and 49,913.88 is: 68,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,202.53 : 124,477.61 = 49,913.88 : x
  2. Step 2: Convert to fraction form
    90,202.53/124,477.61 = 49,913.88/x
  3. Step 3: Cross multiply
    90,202.53x = 124,477.61 × 49,913.88
  4. Step 4: Simplify right side
    90,202.53x = 6,213,160,238.66
  5. Step 5: Solve for x
    x = 6,213,160,238.66/90,202.53
  6. Step 6: Final answer
    x = 68,880.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.