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Finding the Fourth Proportional to 98,696.94, 147,979.65 and 54,344.58

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Solution

The fourth proportional to 98,696.94, 147,979.65 and 54,344.58 is: 81,480.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,696.94 : 147,979.65 = 54,344.58 : x
  2. Step 2: Convert to fraction form
    98,696.94/147,979.65 = 54,344.58/x
  3. Step 3: Cross multiply
    98,696.94x = 147,979.65 × 54,344.58
  4. Step 4: Simplify right side
    98,696.94x = 8,041,891,927.80
  5. Step 5: Solve for x
    x = 8,041,891,927.80/98,696.94
  6. Step 6: Final answer
    x = 81,480.66

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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.