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Finding the Fourth Proportional to 15,835.32, 21,852.14 and 8,762.04

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Solution

The fourth proportional to 15,835.32, 21,852.14 and 8,762.04 is: 12,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.32 : 21,852.14 = 8,762.04 : x
  2. Step 2: Convert to fraction form
    15,835.32/21,852.14 = 8,762.04/x
  3. Step 3: Cross multiply
    15,835.32x = 21,852.14 × 8,762.04
  4. Step 4: Simplify right side
    15,835.32x = 191,469,324.77
  5. Step 5: Solve for x
    x = 191,469,324.77/15,835.32
  6. Step 6: Final answer
    x = 12,091.28

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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.