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Finding the Fourth Proportional to 57,411.72, 86,082.28 and 19,963.08

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Solution

The fourth proportional to 57,411.72, 86,082.28 and 19,963.08 is: 29,932.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,411.72 : 86,082.28 = 19,963.08 : x
  2. Step 2: Convert to fraction form
    57,411.72/86,082.28 = 19,963.08/x
  3. Step 3: Cross multiply
    57,411.72x = 86,082.28 × 19,963.08
  4. Step 4: Simplify right side
    57,411.72x = 1,718,467,442.22
  5. Step 5: Solve for x
    x = 1,718,467,442.22/57,411.72
  6. Step 6: Final answer
    x = 29,932.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.