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Finding the Fourth Proportional to 58,580.62, 87,852.76 and 21,135.83

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Solution

The fourth proportional to 58,580.62, 87,852.76 and 21,135.83 is: 31,697.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,580.62 : 87,852.76 = 21,135.83 : x
  2. Step 2: Convert to fraction form
    58,580.62/87,852.76 = 21,135.83/x
  3. Step 3: Cross multiply
    58,580.62x = 87,852.76 × 21,135.83
  4. Step 4: Simplify right side
    58,580.62x = 1,856,840,947.55
  5. Step 5: Solve for x
    x = 1,856,840,947.55/58,580.62
  6. Step 6: Final answer
    x = 31,697.19

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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.