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Finding the Fourth Proportional to 66,294.19, 91,484.22 and 36,078.86

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Solution

The fourth proportional to 66,294.19, 91,484.22 and 36,078.86 is: 49,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,294.19 : 91,484.22 = 36,078.86 : x
  2. Step 2: Convert to fraction form
    66,294.19/91,484.22 = 36,078.86/x
  3. Step 3: Cross multiply
    66,294.19x = 91,484.22 × 36,078.86
  4. Step 4: Simplify right side
    66,294.19x = 3,300,645,908.17
  5. Step 5: Solve for x
    x = 3,300,645,908.17/66,294.19
  6. Step 6: Final answer
    x = 49,787.86

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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.