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Finding the Fourth Proportional to 52,980.99, 79,397.60 and 39,817.95

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Solution

The fourth proportional to 52,980.99, 79,397.60 and 39,817.95 is: 59,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,980.99 : 79,397.60 = 39,817.95 : x
  2. Step 2: Convert to fraction form
    52,980.99/79,397.60 = 39,817.95/x
  3. Step 3: Cross multiply
    52,980.99x = 79,397.60 × 39,817.95
  4. Step 4: Simplify right side
    52,980.99x = 3,161,449,467.83
  5. Step 5: Solve for x
    x = 3,161,449,467.83/52,980.99
  6. Step 6: Final answer
    x = 59,671.39

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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.