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Finding the Fourth Proportional to 53,644.60, 80,525.76 and 42,622.12

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Solution

The fourth proportional to 53,644.60, 80,525.76 and 42,622.12 is: 63,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,644.60 : 80,525.76 = 42,622.12 : x
  2. Step 2: Convert to fraction form
    53,644.60/80,525.76 = 42,622.12/x
  3. Step 3: Cross multiply
    53,644.60x = 80,525.76 × 42,622.12
  4. Step 4: Simplify right side
    53,644.60x = 3,432,178,605.81
  5. Step 5: Solve for x
    x = 3,432,178,605.81/53,644.60
  6. Step 6: Final answer
    x = 63,979.95

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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.