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Finding the Fourth Proportional to 53,976.95, 81,013.57 and 53,776.01

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Solution

The fourth proportional to 53,976.95, 81,013.57 and 53,776.01 is: 80,711.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,976.95 : 81,013.57 = 53,776.01 : x
  2. Step 2: Convert to fraction form
    53,976.95/81,013.57 = 53,776.01/x
  3. Step 3: Cross multiply
    53,976.95x = 81,013.57 × 53,776.01
  4. Step 4: Simplify right side
    53,976.95x = 4,356,586,550.46
  5. Step 5: Solve for x
    x = 4,356,586,550.46/53,976.95
  6. Step 6: Final answer
    x = 80,711.98

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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.