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Finding the Fourth Proportional to 65,865.12, 90,894.48 and 37,572.48

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Solution

The fourth proportional to 65,865.12, 90,894.48 and 37,572.48 is: 51,850.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,865.12 : 90,894.48 = 37,572.48 : x
  2. Step 2: Convert to fraction form
    65,865.12/90,894.48 = 37,572.48/x
  3. Step 3: Cross multiply
    65,865.12x = 90,894.48 × 37,572.48
  4. Step 4: Simplify right side
    65,865.12x = 3,415,131,031.91
  5. Step 5: Solve for x
    x = 3,415,131,031.91/65,865.12
  6. Step 6: Final answer
    x = 51,850.37

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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.