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Finding the Fourth Proportional to 136,041.20, 204,061.80 and 73,055.60

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Solution

The fourth proportional to 136,041.20, 204,061.80 and 73,055.60 is: 109,583.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,041.20 : 204,061.80 = 73,055.60 : x
  2. Step 2: Convert to fraction form
    136,041.20/204,061.80 = 73,055.60/x
  3. Step 3: Cross multiply
    136,041.20x = 204,061.80 × 73,055.60
  4. Step 4: Simplify right side
    136,041.20x = 14,907,857,236.08
  5. Step 5: Solve for x
    x = 14,907,857,236.08/136,041.20
  6. Step 6: Final answer
    x = 109,583.40

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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.