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Finding the Fourth Proportional to 66,504.84, 91,776.35 and 36,290.06

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Solution

The fourth proportional to 66,504.84, 91,776.35 and 36,290.06 is: 50,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,504.84 : 91,776.35 = 36,290.06 : x
  2. Step 2: Convert to fraction form
    66,504.84/91,776.35 = 36,290.06/x
  3. Step 3: Cross multiply
    66,504.84x = 91,776.35 × 36,290.06
  4. Step 4: Simplify right side
    66,504.84x = 3,330,569,248.08
  5. Step 5: Solve for x
    x = 3,330,569,248.08/66,504.84
  6. Step 6: Final answer
    x = 50,080.10

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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.