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Finding the Fourth Proportional to 114,908.40, 172,362.60 and 55,859.40

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Solution

The fourth proportional to 114,908.40, 172,362.60 and 55,859.40 is: 83,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,908.40 : 172,362.60 = 55,859.40 : x
  2. Step 2: Convert to fraction form
    114,908.40/172,362.60 = 55,859.40/x
  3. Step 3: Cross multiply
    114,908.40x = 172,362.60 × 55,859.40
  4. Step 4: Simplify right side
    114,908.40x = 9,628,071,418.44
  5. Step 5: Solve for x
    x = 9,628,071,418.44/114,908.40
  6. Step 6: Final answer
    x = 83,789.10

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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.