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Finding the Fourth Proportional to 53,612.70, 80,419.73 and 14,169.47

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Solution

The fourth proportional to 53,612.70, 80,419.73 and 14,169.47 is: 21,254.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,612.70 : 80,419.73 = 14,169.47 : x
  2. Step 2: Convert to fraction form
    53,612.70/80,419.73 = 14,169.47/x
  3. Step 3: Cross multiply
    53,612.70x = 80,419.73 × 14,169.47
  4. Step 4: Simplify right side
    53,612.70x = 1,139,504,478.70
  5. Step 5: Solve for x
    x = 1,139,504,478.70/53,612.70
  6. Step 6: Final answer
    x = 21,254.38

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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.