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Finding the Fourth Proportional to 66,308.64, 91,503 and 36,094

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Solution

The fourth proportional to 66,308.64, 91,503 and 36,094 is: 49,808.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,308.64 : 91,503 = 36,094 : x
  2. Step 2: Convert to fraction form
    66,308.64/91,503 = 36,094/x
  3. Step 3: Cross multiply
    66,308.64x = 91,503 × 36,094
  4. Step 4: Simplify right side
    66,308.64x = 3,302,709,282
  5. Step 5: Solve for x
    x = 3,302,709,282/66,308.64
  6. Step 6: Final answer
    x = 49,808.13

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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.