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Finding the Fourth Proportional to 52,980.74, 79,397.22 and 39,817.70

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Solution

The fourth proportional to 52,980.74, 79,397.22 and 39,817.70 is: 59,671.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,980.74 : 79,397.22 = 39,817.70 : x
  2. Step 2: Convert to fraction form
    52,980.74/79,397.22 = 39,817.70/x
  3. Step 3: Cross multiply
    52,980.74x = 79,397.22 × 39,817.70
  4. Step 4: Simplify right side
    52,980.74x = 3,161,414,686.79
  5. Step 5: Solve for x
    x = 3,161,414,686.79/52,980.74
  6. Step 6: Final answer
    x = 59,671.02

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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.