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Finding the Fourth Proportional to 136,696.16, 204,974.02 and 61,775.72

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Solution

The fourth proportional to 136,696.16, 204,974.02 and 61,775.72 is: 92,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,696.16 : 204,974.02 = 61,775.72 : x
  2. Step 2: Convert to fraction form
    136,696.16/204,974.02 = 61,775.72/x
  3. Step 3: Cross multiply
    136,696.16x = 204,974.02 × 61,775.72
  4. Step 4: Simplify right side
    136,696.16x = 12,662,417,666.79
  5. Step 5: Solve for x
    x = 12,662,417,666.79/136,696.16
  6. Step 6: Final answer
    x = 92,631.85

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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.