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Finding the Fourth Proportional to 64,931.20, 97,435.20 and 23,372.80

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Solution

The fourth proportional to 64,931.20, 97,435.20 and 23,372.80 is: 35,073.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,931.20 : 97,435.20 = 23,372.80 : x
  2. Step 2: Convert to fraction form
    64,931.20/97,435.20 = 23,372.80/x
  3. Step 3: Cross multiply
    64,931.20x = 97,435.20 × 23,372.80
  4. Step 4: Simplify right side
    64,931.20x = 2,277,333,442.56
  5. Step 5: Solve for x
    x = 2,277,333,442.56/64,931.20
  6. Step 6: Final answer
    x = 35,073.02

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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.