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Finding the Fourth Proportional to 64,953.20, 97,429.80 and 61,016.60

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Solution

The fourth proportional to 64,953.20, 97,429.80 and 61,016.60 is: 91,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,953.20 : 97,429.80 = 61,016.60 : x
  2. Step 2: Convert to fraction form
    64,953.20/97,429.80 = 61,016.60/x
  3. Step 3: Cross multiply
    64,953.20x = 97,429.80 × 61,016.60
  4. Step 4: Simplify right side
    64,953.20x = 5,944,835,134.68
  5. Step 5: Solve for x
    x = 5,944,835,134.68/64,953.20
  6. Step 6: Final answer
    x = 91,524.90

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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.