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Finding the Fourth Proportional to 66,211.60, 99,233.70 and 26,746.60

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Solution

The fourth proportional to 66,211.60, 99,233.70 and 26,746.60 is: 40,086.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,211.60 : 99,233.70 = 26,746.60 : x
  2. Step 2: Convert to fraction form
    66,211.60/99,233.70 = 26,746.60/x
  3. Step 3: Cross multiply
    66,211.60x = 99,233.70 × 26,746.60
  4. Step 4: Simplify right side
    66,211.60x = 2,654,164,080.42
  5. Step 5: Solve for x
    x = 2,654,164,080.42/66,211.60
  6. Step 6: Final answer
    x = 40,086.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.