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Finding the Fourth Proportional to 58,291.92, 87,415.68 and 20,845.08

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Solution

The fourth proportional to 58,291.92, 87,415.68 and 20,845.08 is: 31,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,291.92 : 87,415.68 = 20,845.08 : x
  2. Step 2: Convert to fraction form
    58,291.92/87,415.68 = 20,845.08/x
  3. Step 3: Cross multiply
    58,291.92x = 87,415.68 × 20,845.08
  4. Step 4: Simplify right side
    58,291.92x = 1,822,186,842.85
  5. Step 5: Solve for x
    x = 1,822,186,842.85/58,291.92
  6. Step 6: Final answer
    x = 31,259.68

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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.