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Finding the Fourth Proportional to 66,809.98, 92,198.53 and 38,133.51

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Solution

The fourth proportional to 66,809.98, 92,198.53 and 38,133.51 is: 52,624.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809.98 : 92,198.53 = 38,133.51 : x
  2. Step 2: Convert to fraction form
    66,809.98/92,198.53 = 38,133.51/x
  3. Step 3: Cross multiply
    66,809.98x = 92,198.53 × 38,133.51
  4. Step 4: Simplify right side
    66,809.98x = 3,515,853,267.66
  5. Step 5: Solve for x
    x = 3,515,853,267.66/66,809.98
  6. Step 6: Final answer
    x = 52,624.67

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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.