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Finding the Fourth Proportional to 57,701.40, 86,622.30 and 36,641.40

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Solution

The fourth proportional to 57,701.40, 86,622.30 and 36,641.40 is: 55,006.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,701.40 : 86,622.30 = 36,641.40 : x
  2. Step 2: Convert to fraction form
    57,701.40/86,622.30 = 36,641.40/x
  3. Step 3: Cross multiply
    57,701.40x = 86,622.30 × 36,641.40
  4. Step 4: Simplify right side
    57,701.40x = 3,173,962,343.22
  5. Step 5: Solve for x
    x = 3,173,962,343.22/57,701.40
  6. Step 6: Final answer
    x = 55,006.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.