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Finding the Fourth Proportional to 109,940.89, 151,718.71 and 59,639.89

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Solution

The fourth proportional to 109,940.89, 151,718.71 and 59,639.89 is: 82,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,940.89 : 151,718.71 = 59,639.89 : x
  2. Step 2: Convert to fraction form
    109,940.89/151,718.71 = 59,639.89/x
  3. Step 3: Cross multiply
    109,940.89x = 151,718.71 × 59,639.89
  4. Step 4: Simplify right side
    109,940.89x = 9,048,486,416.75
  5. Step 5: Solve for x
    x = 9,048,486,416.75/109,940.89
  6. Step 6: Final answer
    x = 82,303.20

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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.