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Finding the Fourth Proportional to 53,905.70, 80,666.55 and 34,193.70

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Solution

The fourth proportional to 53,905.70, 80,666.55 and 34,193.70 is: 51,168.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,905.70 : 80,666.55 = 34,193.70 : x
  2. Step 2: Convert to fraction form
    53,905.70/80,666.55 = 34,193.70/x
  3. Step 3: Cross multiply
    53,905.70x = 80,666.55 × 34,193.70
  4. Step 4: Simplify right side
    53,905.70x = 2,758,287,810.74
  5. Step 5: Solve for x
    x = 2,758,287,810.74/53,905.70
  6. Step 6: Final answer
    x = 51,168.76

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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.