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Finding the Fourth Proportional to 66,064.64, 91,169.27 and 37,770.92

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Solution

The fourth proportional to 66,064.64, 91,169.27 and 37,770.92 is: 52,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,064.64 : 91,169.27 = 37,770.92 : x
  2. Step 2: Convert to fraction form
    66,064.64/91,169.27 = 37,770.92/x
  3. Step 3: Cross multiply
    66,064.64x = 91,169.27 × 37,770.92
  4. Step 4: Simplify right side
    66,064.64x = 3,443,547,014.77
  5. Step 5: Solve for x
    x = 3,443,547,014.77/66,064.64
  6. Step 6: Final answer
    x = 52,123.90

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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.