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Finding the Fourth Proportional to 58,168.53, 87,262.52 and 20,750.18

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Solution

The fourth proportional to 58,168.53, 87,262.52 and 20,750.18 is: 31,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,168.53 : 87,262.52 = 20,750.18 : x
  2. Step 2: Convert to fraction form
    58,168.53/87,262.52 = 20,750.18/x
  3. Step 3: Cross multiply
    58,168.53x = 87,262.52 × 20,750.18
  4. Step 4: Simplify right side
    58,168.53x = 1,810,712,457.19
  5. Step 5: Solve for x
    x = 1,810,712,457.19/58,168.53
  6. Step 6: Final answer
    x = 31,128.73

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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.