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Finding the Fourth Proportional to 66,673.52, 91,981.74 and 43,697.06

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Solution

The fourth proportional to 66,673.52, 91,981.74 and 43,697.06 is: 60,283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,673.52 : 91,981.74 = 43,697.06 : x
  2. Step 2: Convert to fraction form
    66,673.52/91,981.74 = 43,697.06/x
  3. Step 3: Cross multiply
    66,673.52x = 91,981.74 × 43,697.06
  4. Step 4: Simplify right side
    66,673.52x = 4,019,331,611.68
  5. Step 5: Solve for x
    x = 4,019,331,611.68/66,673.52
  6. Step 6: Final answer
    x = 60,283.78

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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.