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Finding the Fourth Proportional to 179,345, 247,513.38 and 99,857

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Solution

The fourth proportional to 179,345, 247,513.38 and 99,857 is: 137,812.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,345 : 247,513.38 = 99,857 : x
  2. Step 2: Convert to fraction form
    179,345/247,513.38 = 99,857/x
  3. Step 3: Cross multiply
    179,345x = 247,513.38 × 99,857
  4. Step 4: Simplify right side
    179,345x = 24,715,943,586.66
  5. Step 5: Solve for x
    x = 24,715,943,586.66/179,345
  6. Step 6: Final answer
    x = 137,812.28

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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.