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Finding the Fourth Proportional to 97,429.92, 134,544.15 and 71,710.80

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Solution

The fourth proportional to 97,429.92, 134,544.15 and 71,710.80 is: 99,027.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,429.92 : 134,544.15 = 71,710.80 : x
  2. Step 2: Convert to fraction form
    97,429.92/134,544.15 = 71,710.80/x
  3. Step 3: Cross multiply
    97,429.92x = 134,544.15 × 71,710.80
  4. Step 4: Simplify right side
    97,429.92x = 9,648,268,631.82
  5. Step 5: Solve for x
    x = 9,648,268,631.82/97,429.92
  6. Step 6: Final answer
    x = 99,027.78

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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.