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Finding the Fourth Proportional to 52,799.88, 78,980.94 and 40,224.76

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Solution

The fourth proportional to 52,799.88, 78,980.94 and 40,224.76 is: 60,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,799.88 : 78,980.94 = 40,224.76 : x
  2. Step 2: Convert to fraction form
    52,799.88/78,980.94 = 40,224.76/x
  3. Step 3: Cross multiply
    52,799.88x = 78,980.94 × 40,224.76
  4. Step 4: Simplify right side
    52,799.88x = 3,176,989,356.07
  5. Step 5: Solve for x
    x = 3,176,989,356.07/52,799.88
  6. Step 6: Final answer
    x = 60,170.39

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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.