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Finding the Fourth Proportional to 34,578.54, 47,719.32 and 19,471.74

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Solution

The fourth proportional to 34,578.54, 47,719.32 and 19,471.74 is: 26,871.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,578.54 : 47,719.32 = 19,471.74 : x
  2. Step 2: Convert to fraction form
    34,578.54/47,719.32 = 19,471.74/x
  3. Step 3: Cross multiply
    34,578.54x = 47,719.32 × 19,471.74
  4. Step 4: Simplify right side
    34,578.54x = 929,178,192.02
  5. Step 5: Solve for x
    x = 929,178,192.02/34,578.54
  6. Step 6: Final answer
    x = 26,871.53

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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.