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Finding the Fourth Proportional to 66,869.90, 92,276.54 and 36,649.22

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Solution

The fourth proportional to 66,869.90, 92,276.54 and 36,649.22 is: 50,573.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869.90 : 92,276.54 = 36,649.22 : x
  2. Step 2: Convert to fraction form
    66,869.90/92,276.54 = 36,649.22/x
  3. Step 3: Cross multiply
    66,869.90x = 92,276.54 × 36,649.22
  4. Step 4: Simplify right side
    66,869.90x = 3,381,863,215.30
  5. Step 5: Solve for x
    x = 3,381,863,215.30/66,869.90
  6. Step 6: Final answer
    x = 50,573.77

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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.