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Finding the Fourth Proportional to 66,896.61, 100,377.80 and 26,913.98

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Solution

The fourth proportional to 66,896.61, 100,377.80 and 26,913.98 is: 40,384.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,896.61 : 100,377.80 = 26,913.98 : x
  2. Step 2: Convert to fraction form
    66,896.61/100,377.80 = 26,913.98/x
  3. Step 3: Cross multiply
    66,896.61x = 100,377.80 × 26,913.98
  4. Step 4: Simplify right side
    66,896.61x = 2,701,565,465.19
  5. Step 5: Solve for x
    x = 2,701,565,465.19/66,896.61
  6. Step 6: Final answer
    x = 40,384.19

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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.