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Finding the Fourth Proportional to 35,187.91, 48,581.91 and 31,404.60

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Solution

The fourth proportional to 35,187.91, 48,581.91 and 31,404.60 is: 43,358.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,187.91 : 48,581.91 = 31,404.60 : x
  2. Step 2: Convert to fraction form
    35,187.91/48,581.91 = 31,404.60/x
  3. Step 3: Cross multiply
    35,187.91x = 48,581.91 × 31,404.60
  4. Step 4: Simplify right side
    35,187.91x = 1,525,695,450.79
  5. Step 5: Solve for x
    x = 1,525,695,450.79/35,187.91
  6. Step 6: Final answer
    x = 43,358.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.