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Finding the Fourth Proportional to 56,622.76, 84,922.80 and 53,812.60

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Solution

The fourth proportional to 56,622.76, 84,922.80 and 53,812.60 is: 80,708.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,622.76 : 84,922.80 = 53,812.60 : x
  2. Step 2: Convert to fraction form
    56,622.76/84,922.80 = 53,812.60/x
  3. Step 3: Cross multiply
    56,622.76x = 84,922.80 × 53,812.60
  4. Step 4: Simplify right side
    56,622.76x = 4,569,916,667.28
  5. Step 5: Solve for x
    x = 4,569,916,667.28/56,622.76
  6. Step 6: Final answer
    x = 80,708.12

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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.