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Finding the Fourth Proportional to 66,417.84, 91,656.02 and 36,203.16

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Solution

The fourth proportional to 66,417.84, 91,656.02 and 36,203.16 is: 49,960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,417.84 : 91,656.02 = 36,203.16 : x
  2. Step 2: Convert to fraction form
    66,417.84/91,656.02 = 36,203.16/x
  3. Step 3: Cross multiply
    66,417.84x = 91,656.02 × 36,203.16
  4. Step 4: Simplify right side
    66,417.84x = 3,318,236,917.73
  5. Step 5: Solve for x
    x = 3,318,236,917.73/66,417.84
  6. Step 6: Final answer
    x = 49,960.03

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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.