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Finding the Fourth Proportional to 66,463.16, 91,718.70 and 36,655.16

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Solution

The fourth proportional to 66,463.16, 91,718.70 and 36,655.16 is: 50,583.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,463.16 : 91,718.70 = 36,655.16 : x
  2. Step 2: Convert to fraction form
    66,463.16/91,718.70 = 36,655.16/x
  3. Step 3: Cross multiply
    66,463.16x = 91,718.70 × 36,655.16
  4. Step 4: Simplify right side
    66,463.16x = 3,361,963,623.49
  5. Step 5: Solve for x
    x = 3,361,963,623.49/66,463.16
  6. Step 6: Final answer
    x = 50,583.87

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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.