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Finding the Fourth Proportional to 66,929.64, 92,364.90 and 37,121

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Solution

The fourth proportional to 66,929.64, 92,364.90 and 37,121 is: 51,228.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,929.64 : 92,364.90 = 37,121 : x
  2. Step 2: Convert to fraction form
    66,929.64/92,364.90 = 37,121/x
  3. Step 3: Cross multiply
    66,929.64x = 92,364.90 × 37,121
  4. Step 4: Simplify right side
    66,929.64x = 3,428,677,452.90
  5. Step 5: Solve for x
    x = 3,428,677,452.90/66,929.64
  6. Step 6: Final answer
    x = 51,228.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.