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Finding the Fourth Proportional to 64,422.49, 96,636.77 and 53,156.93

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Solution

The fourth proportional to 64,422.49, 96,636.77 and 53,156.93 is: 79,737.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,422.49 : 96,636.77 = 53,156.93 : x
  2. Step 2: Convert to fraction form
    64,422.49/96,636.77 = 53,156.93/x
  3. Step 3: Cross multiply
    64,422.49x = 96,636.77 × 53,156.93
  4. Step 4: Simplify right side
    64,422.49x = 5,136,914,433.56
  5. Step 5: Solve for x
    x = 5,136,914,433.56/64,422.49
  6. Step 6: Final answer
    x = 79,737.91

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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.