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Finding the Fourth Proportional to 136,777.10, 205,526.45 and 73,643.90

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Solution

The fourth proportional to 136,777.10, 205,526.45 and 73,643.90 is: 110,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,777.10 : 205,526.45 = 73,643.90 : x
  2. Step 2: Convert to fraction form
    136,777.10/205,526.45 = 73,643.90/x
  3. Step 3: Cross multiply
    136,777.10x = 205,526.45 × 73,643.90
  4. Step 4: Simplify right side
    136,777.10x = 15,135,768,487.63
  5. Step 5: Solve for x
    x = 15,135,768,487.63/136,777.10
  6. Step 6: Final answer
    x = 110,660.11

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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.