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Finding the Fourth Proportional to 92,128.72, 127,136.28 and 53,914.56

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Solution

The fourth proportional to 92,128.72, 127,136.28 and 53,914.56 is: 74,401.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,128.72 : 127,136.28 = 53,914.56 : x
  2. Step 2: Convert to fraction form
    92,128.72/127,136.28 = 53,914.56/x
  3. Step 3: Cross multiply
    92,128.72x = 127,136.28 × 53,914.56
  4. Step 4: Simplify right side
    92,128.72x = 6,854,496,596.24
  5. Step 5: Solve for x
    x = 6,854,496,596.24/92,128.72
  6. Step 6: Final answer
    x = 74,401.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.