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Finding the Fourth Proportional to 58,064.85, 87,133.41 and 31,399.77

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Solution

The fourth proportional to 58,064.85, 87,133.41 and 31,399.77 is: 47,119.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,064.85 : 87,133.41 = 31,399.77 : x
  2. Step 2: Convert to fraction form
    58,064.85/87,133.41 = 31,399.77/x
  3. Step 3: Cross multiply
    58,064.85x = 87,133.41 × 31,399.77
  4. Step 4: Simplify right side
    58,064.85x = 2,735,968,833.24
  5. Step 5: Solve for x
    x = 2,735,968,833.24/58,064.85
  6. Step 6: Final answer
    x = 47,119.19

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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.