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Finding the Fourth Proportional to 136,047.60, 203,974.20 and 61,106.40

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Solution

The fourth proportional to 136,047.60, 203,974.20 and 61,106.40 is: 91,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,047.60 : 203,974.20 = 61,106.40 : x
  2. Step 2: Convert to fraction form
    136,047.60/203,974.20 = 61,106.40/x
  3. Step 3: Cross multiply
    136,047.60x = 203,974.20 × 61,106.40
  4. Step 4: Simplify right side
    136,047.60x = 12,464,129,054.88
  5. Step 5: Solve for x
    x = 12,464,129,054.88/136,047.60
  6. Step 6: Final answer
    x = 91,615.94

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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.