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Finding the Fourth Proportional to 58,389.66, 87,513.52 and 31,672.30

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Solution

The fourth proportional to 58,389.66, 87,513.52 and 31,672.30 is: 47,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,389.66 : 87,513.52 = 31,672.30 : x
  2. Step 2: Convert to fraction form
    58,389.66/87,513.52 = 31,672.30/x
  3. Step 3: Cross multiply
    58,389.66x = 87,513.52 × 31,672.30
  4. Step 4: Simplify right side
    58,389.66x = 2,771,754,021.93
  5. Step 5: Solve for x
    x = 2,771,754,021.93/58,389.66
  6. Step 6: Final answer
    x = 47,469.95

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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.