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Finding the Fourth Proportional to 107,651.48, 161,477.31 and 51,478.34

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Solution

The fourth proportional to 107,651.48, 161,477.31 and 51,478.34 is: 77,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,651.48 : 161,477.31 = 51,478.34 : x
  2. Step 2: Convert to fraction form
    107,651.48/161,477.31 = 51,478.34/x
  3. Step 3: Cross multiply
    107,651.48x = 161,477.31 × 51,478.34
  4. Step 4: Simplify right side
    107,651.48x = 8,312,583,866.47
  5. Step 5: Solve for x
    x = 8,312,583,866.47/107,651.48
  6. Step 6: Final answer
    x = 77,217.55

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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.