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Finding the Fourth Proportional to 57,219.28, 78,946.76 and 33,018.56

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Solution

The fourth proportional to 57,219.28, 78,946.76 and 33,018.56 is: 45,556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,219.28 : 78,946.76 = 33,018.56 : x
  2. Step 2: Convert to fraction form
    57,219.28/78,946.76 = 33,018.56/x
  3. Step 3: Cross multiply
    57,219.28x = 78,946.76 × 33,018.56
  4. Step 4: Simplify right side
    57,219.28x = 2,606,707,937.13
  5. Step 5: Solve for x
    x = 2,606,707,937.13/57,219.28
  6. Step 6: Final answer
    x = 45,556.47

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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.