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Finding the Fourth Proportional to 58,079.80, 86,925.30 and 40,583.80

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Solution

The fourth proportional to 58,079.80, 86,925.30 and 40,583.80 is: 60,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,079.80 : 86,925.30 = 40,583.80 : x
  2. Step 2: Convert to fraction form
    58,079.80/86,925.30 = 40,583.80/x
  3. Step 3: Cross multiply
    58,079.80x = 86,925.30 × 40,583.80
  4. Step 4: Simplify right side
    58,079.80x = 3,527,758,990.14
  5. Step 5: Solve for x
    x = 3,527,758,990.14/58,079.80
  6. Step 6: Final answer
    x = 60,739.86

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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.