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Finding the Fourth Proportional to 58,121.60, 86,980.80 and 34,764.80

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Solution

The fourth proportional to 58,121.60, 86,980.80 and 34,764.80 is: 52,026.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,121.60 : 86,980.80 = 34,764.80 : x
  2. Step 2: Convert to fraction form
    58,121.60/86,980.80 = 34,764.80/x
  3. Step 3: Cross multiply
    58,121.60x = 86,980.80 × 34,764.80
  4. Step 4: Simplify right side
    58,121.60x = 3,023,870,115.84
  5. Step 5: Solve for x
    x = 3,023,870,115.84/58,121.60
  6. Step 6: Final answer
    x = 52,026.62

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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.