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Finding the Fourth Proportional to 53,356.66, 80,039.04 and 15,913.80

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Solution

The fourth proportional to 53,356.66, 80,039.04 and 15,913.80 is: 23,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,356.66 : 80,039.04 = 15,913.80 : x
  2. Step 2: Convert to fraction form
    53,356.66/80,039.04 = 15,913.80/x
  3. Step 3: Cross multiply
    53,356.66x = 80,039.04 × 15,913.80
  4. Step 4: Simplify right side
    53,356.66x = 1,273,725,274.75
  5. Step 5: Solve for x
    x = 1,273,725,274.75/53,356.66
  6. Step 6: Final answer
    x = 23,871.91

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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.