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Finding the Fourth Proportional to 66,535.57, 91,834.50 and 43,878.65

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Solution

The fourth proportional to 66,535.57, 91,834.50 and 43,878.65 is: 60,562.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,535.57 : 91,834.50 = 43,878.65 : x
  2. Step 2: Convert to fraction form
    66,535.57/91,834.50 = 43,878.65/x
  3. Step 3: Cross multiply
    66,535.57x = 91,834.50 × 43,878.65
  4. Step 4: Simplify right side
    66,535.57x = 4,029,573,883.43
  5. Step 5: Solve for x
    x = 4,029,573,883.43/66,535.57
  6. Step 6: Final answer
    x = 60,562.70

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1.5x scale

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.