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Finding the Fourth Proportional to 15,798.06, 21,801.30 and 8,724.48

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Solution

The fourth proportional to 15,798.06, 21,801.30 and 8,724.48 is: 12,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798.06 : 21,801.30 = 8,724.48 : x
  2. Step 2: Convert to fraction form
    15,798.06/21,801.30 = 8,724.48/x
  3. Step 3: Cross multiply
    15,798.06x = 21,801.30 × 8,724.48
  4. Step 4: Simplify right side
    15,798.06x = 190,205,005.82
  5. Step 5: Solve for x
    x = 190,205,005.82/15,798.06
  6. Step 6: Final answer
    x = 12,039.77

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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.