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Finding the Fourth Proportional to 66,816.40, 92,206.65 and 36,602.81

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Solution

The fourth proportional to 66,816.40, 92,206.65 and 36,602.81 is: 50,511.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,816.40 : 92,206.65 = 36,602.81 : x
  2. Step 2: Convert to fraction form
    66,816.40/92,206.65 = 36,602.81/x
  3. Step 3: Cross multiply
    66,816.40x = 92,206.65 × 36,602.81
  4. Step 4: Simplify right side
    66,816.40x = 3,375,022,512.69
  5. Step 5: Solve for x
    x = 3,375,022,512.69/66,816.40
  6. Step 6: Final answer
    x = 50,511.89

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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.