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Finding the Fourth Proportional to 53,409.54, 80,118.89 and 13,966.59

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Solution

The fourth proportional to 53,409.54, 80,118.89 and 13,966.59 is: 20,951.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,409.54 : 80,118.89 = 13,966.59 : x
  2. Step 2: Convert to fraction form
    53,409.54/80,118.89 = 13,966.59/x
  3. Step 3: Cross multiply
    53,409.54x = 80,118.89 × 13,966.59
  4. Step 4: Simplify right side
    53,409.54x = 1,118,987,970.87
  5. Step 5: Solve for x
    x = 1,118,987,970.87/53,409.54
  6. Step 6: Final answer
    x = 20,951.09

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1.5x scale

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.