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Finding the Fourth Proportional to 38,653.27, 57,978.99 and 12,358.24

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Solution

The fourth proportional to 38,653.27, 57,978.99 and 12,358.24 is: 18,537.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,653.27 : 57,978.99 = 12,358.24 : x
  2. Step 2: Convert to fraction form
    38,653.27/57,978.99 = 12,358.24/x
  3. Step 3: Cross multiply
    38,653.27x = 57,978.99 × 12,358.24
  4. Step 4: Simplify right side
    38,653.27x = 716,518,128.43
  5. Step 5: Solve for x
    x = 716,518,128.43/38,653.27
  6. Step 6: Final answer
    x = 18,537.06

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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.