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Finding the Fourth Proportional to 57,092.80, 78,777.48 and 33,210.76

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Solution

The fourth proportional to 57,092.80, 78,777.48 and 33,210.76 is: 45,824.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,092.80 : 78,777.48 = 33,210.76 : x
  2. Step 2: Convert to fraction form
    57,092.80/78,777.48 = 33,210.76/x
  3. Step 3: Cross multiply
    57,092.80x = 78,777.48 × 33,210.76
  4. Step 4: Simplify right side
    57,092.80x = 2,616,259,981.68
  5. Step 5: Solve for x
    x = 2,616,259,981.68/57,092.80
  6. Step 6: Final answer
    x = 45,824.69

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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.