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Finding the Fourth Proportional to 64,228.60, 96,342.90 and 34,631.20

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Solution

The fourth proportional to 64,228.60, 96,342.90 and 34,631.20 is: 51,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,228.60 : 96,342.90 = 34,631.20 : x
  2. Step 2: Convert to fraction form
    64,228.60/96,342.90 = 34,631.20/x
  3. Step 3: Cross multiply
    64,228.60x = 96,342.90 × 34,631.20
  4. Step 4: Simplify right side
    64,228.60x = 3,336,470,238.48
  5. Step 5: Solve for x
    x = 3,336,470,238.48/64,228.60
  6. Step 6: Final answer
    x = 51,946.80

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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.