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Finding the Fourth Proportional to 53,918.40, 80,848.80 and 22,718.40

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Solution

The fourth proportional to 53,918.40, 80,848.80 and 22,718.40 is: 34,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,918.40 : 80,848.80 = 22,718.40 : x
  2. Step 2: Convert to fraction form
    53,918.40/80,848.80 = 22,718.40/x
  3. Step 3: Cross multiply
    53,918.40x = 80,848.80 × 22,718.40
  4. Step 4: Simplify right side
    53,918.40x = 1,836,755,377.92
  5. Step 5: Solve for x
    x = 1,836,755,377.92/53,918.40
  6. Step 6: Final answer
    x = 34,065.47

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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.