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Finding the Fourth Proportional to 71,752.73, 99,155.32 and 53,816.60

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Solution

The fourth proportional to 71,752.73, 99,155.32 and 53,816.60 is: 74,369.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,752.73 : 99,155.32 = 53,816.60 : x
  2. Step 2: Convert to fraction form
    71,752.73/99,155.32 = 53,816.60/x
  3. Step 3: Cross multiply
    71,752.73x = 99,155.32 × 53,816.60
  4. Step 4: Simplify right side
    71,752.73x = 5,336,202,307.66
  5. Step 5: Solve for x
    x = 5,336,202,307.66/71,752.73
  6. Step 6: Final answer
    x = 74,369.33

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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.