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Finding the Fourth Proportional to 66,208.40, 91,369.38 and 35,995.76

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Solution

The fourth proportional to 66,208.40, 91,369.38 and 35,995.76 is: 49,675.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208.40 : 91,369.38 = 35,995.76 : x
  2. Step 2: Convert to fraction form
    66,208.40/91,369.38 = 35,995.76/x
  3. Step 3: Cross multiply
    66,208.40x = 91,369.38 × 35,995.76
  4. Step 4: Simplify right side
    66,208.40x = 3,288,909,816.98
  5. Step 5: Solve for x
    x = 3,288,909,816.98/66,208.40
  6. Step 6: Final answer
    x = 49,675.12

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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.