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Finding the Fourth Proportional to 53,812.95, 80,719.49 and 25,726.40

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Solution

The fourth proportional to 53,812.95, 80,719.49 and 25,726.40 is: 38,589.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,812.95 : 80,719.49 = 25,726.40 : x
  2. Step 2: Convert to fraction form
    53,812.95/80,719.49 = 25,726.40/x
  3. Step 3: Cross multiply
    53,812.95x = 80,719.49 × 25,726.40
  4. Step 4: Simplify right side
    53,812.95x = 2,076,621,887.54
  5. Step 5: Solve for x
    x = 2,076,621,887.54/53,812.95
  6. Step 6: Final answer
    x = 38,589.63

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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.