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Finding the Fourth Proportional to 38,653.28, 58,243.25 and 31,787.11

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Solution

The fourth proportional to 38,653.28, 58,243.25 and 31,787.11 is: 47,897.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,653.28 : 58,243.25 = 31,787.11 : x
  2. Step 2: Convert to fraction form
    38,653.28/58,243.25 = 31,787.11/x
  3. Step 3: Cross multiply
    38,653.28x = 58,243.25 × 31,787.11
  4. Step 4: Simplify right side
    38,653.28x = 1,851,384,582.97
  5. Step 5: Solve for x
    x = 1,851,384,582.97/38,653.28
  6. Step 6: Final answer
    x = 47,897.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.