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Finding the Fourth Proportional to 88,782.28, 122,623.57 and 70,693.56

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Solution

The fourth proportional to 88,782.28, 122,623.57 and 70,693.56 is: 97,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,782.28 : 122,623.57 = 70,693.56 : x
  2. Step 2: Convert to fraction form
    88,782.28/122,623.57 = 70,693.56/x
  3. Step 3: Cross multiply
    88,782.28x = 122,623.57 × 70,693.56
  4. Step 4: Simplify right side
    88,782.28x = 8,668,696,791.58
  5. Step 5: Solve for x
    x = 8,668,696,791.58/88,782.28
  6. Step 6: Final answer
    x = 97,639.95

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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.