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Finding the Fourth Proportional to 64,607.74, 96,911.60 and 20,237.96

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Solution

The fourth proportional to 64,607.74, 96,911.60 and 20,237.96 is: 30,356.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,607.74 : 96,911.60 = 20,237.96 : x
  2. Step 2: Convert to fraction form
    64,607.74/96,911.60 = 20,237.96/x
  3. Step 3: Cross multiply
    64,607.74x = 96,911.60 × 20,237.96
  4. Step 4: Simplify right side
    64,607.74x = 1,961,293,084.34
  5. Step 5: Solve for x
    x = 1,961,293,084.34/64,607.74
  6. Step 6: Final answer
    x = 30,356.94

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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.