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Finding the Fourth Proportional to 58,205.94, 87,309.81 and 18,763.26

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Solution

The fourth proportional to 58,205.94, 87,309.81 and 18,763.26 is: 28,145.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,205.94 : 87,309.81 = 18,763.26 : x
  2. Step 2: Convert to fraction form
    58,205.94/87,309.81 = 18,763.26/x
  3. Step 3: Cross multiply
    58,205.94x = 87,309.81 × 18,763.26
  4. Step 4: Simplify right side
    58,205.94x = 1,638,216,665.58
  5. Step 5: Solve for x
    x = 1,638,216,665.58/58,205.94
  6. Step 6: Final answer
    x = 28,145.18

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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.