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Finding the Fourth Proportional to 66,279.60, 99,370.80 and 26,816.40

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Solution

The fourth proportional to 66,279.60, 99,370.80 and 26,816.40 is: 40,204.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279.60 : 99,370.80 = 26,816.40 : x
  2. Step 2: Convert to fraction form
    66,279.60/99,370.80 = 26,816.40/x
  3. Step 3: Cross multiply
    66,279.60x = 99,370.80 × 26,816.40
  4. Step 4: Simplify right side
    66,279.60x = 2,664,767,121.12
  5. Step 5: Solve for x
    x = 2,664,767,121.12/66,279.60
  6. Step 6: Final answer
    x = 40,204.94

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1.5x scale

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.