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Finding the Fourth Proportional to 65,778.48, 90,776.76 and 37,483.44

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Solution

The fourth proportional to 65,778.48, 90,776.76 and 37,483.44 is: 51,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,778.48 : 90,776.76 = 37,483.44 : x
  2. Step 2: Convert to fraction form
    65,778.48/90,776.76 = 37,483.44/x
  3. Step 3: Cross multiply
    65,778.48x = 90,776.76 × 37,483.44
  4. Step 4: Simplify right side
    65,778.48x = 3,402,625,236.85
  5. Step 5: Solve for x
    x = 3,402,625,236.85/65,778.48
  6. Step 6: Final answer
    x = 51,728.55

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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.