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Finding the Fourth Proportional to 136,925.98, 205,357.91 and 61,996.66

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Solution

The fourth proportional to 136,925.98, 205,357.91 and 61,996.66 is: 92,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,925.98 : 205,357.91 = 61,996.66 : x
  2. Step 2: Convert to fraction form
    136,925.98/205,357.91 = 61,996.66/x
  3. Step 3: Cross multiply
    136,925.98x = 205,357.91 × 61,996.66
  4. Step 4: Simplify right side
    136,925.98x = 12,731,503,652.78
  5. Step 5: Solve for x
    x = 12,731,503,652.78/136,925.98
  6. Step 6: Final answer
    x = 92,980.92

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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.