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Finding the Fourth Proportional to 66,874.40, 92,287.70 and 40,018.04

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Solution

The fourth proportional to 66,874.40, 92,287.70 and 40,018.04 is: 55,225.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,874.40 : 92,287.70 = 40,018.04 : x
  2. Step 2: Convert to fraction form
    66,874.40/92,287.70 = 40,018.04/x
  3. Step 3: Cross multiply
    66,874.40x = 92,287.70 × 40,018.04
  4. Step 4: Simplify right side
    66,874.40x = 3,693,172,208.58
  5. Step 5: Solve for x
    x = 3,693,172,208.58/66,874.40
  6. Step 6: Final answer
    x = 55,225.50

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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.