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Finding the Fourth Proportional to 66,718.84, 92,071.22 and 36,503.81

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Solution

The fourth proportional to 66,718.84, 92,071.22 and 36,503.81 is: 50,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,718.84 : 92,071.22 = 36,503.81 : x
  2. Step 2: Convert to fraction form
    66,718.84/92,071.22 = 36,503.81/x
  3. Step 3: Cross multiply
    66,718.84x = 92,071.22 × 36,503.81
  4. Step 4: Simplify right side
    66,718.84x = 3,360,950,138.83
  5. Step 5: Solve for x
    x = 3,360,950,138.83/66,718.84
  6. Step 6: Final answer
    x = 50,374.83

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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.