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Finding the Fourth Proportional to 58,407.39, 87,624.86 and 18,961.47

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Solution

The fourth proportional to 58,407.39, 87,624.86 and 18,961.47 is: 28,446.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,407.39 : 87,624.86 = 18,961.47 : x
  2. Step 2: Convert to fraction form
    58,407.39/87,624.86 = 18,961.47/x
  3. Step 3: Cross multiply
    58,407.39x = 87,624.86 × 18,961.47
  4. Step 4: Simplify right side
    58,407.39x = 1,661,496,059.34
  5. Step 5: Solve for x
    x = 1,661,496,059.34/58,407.39
  6. Step 6: Final answer
    x = 28,446.68

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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.