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Finding the Fourth Proportional to 136,812.93, 205,218.32 and 73,662.63

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Solution

The fourth proportional to 136,812.93, 205,218.32 and 73,662.63 is: 110,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,812.93 : 205,218.32 = 73,662.63 : x
  2. Step 2: Convert to fraction form
    136,812.93/205,218.32 = 73,662.63/x
  3. Step 3: Cross multiply
    136,812.93x = 205,218.32 × 73,662.63
  4. Step 4: Simplify right side
    136,812.93x = 15,116,920,807.07
  5. Step 5: Solve for x
    x = 15,116,920,807.07/136,812.93
  6. Step 6: Final answer
    x = 110,493.36

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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.