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Finding the Fourth Proportional to 15,726.21, 23,594.99 and 7,929.15

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Solution

The fourth proportional to 15,726.21, 23,594.99 and 7,929.15 is: 11,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.21 : 23,594.99 = 7,929.15 : x
  2. Step 2: Convert to fraction form
    15,726.21/23,594.99 = 7,929.15/x
  3. Step 3: Cross multiply
    15,726.21x = 23,594.99 × 7,929.15
  4. Step 4: Simplify right side
    15,726.21x = 187,088,214.96
  5. Step 5: Solve for x
    x = 187,088,214.96/15,726.21
  6. Step 6: Final answer
    x = 11,896.59

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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.