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Finding the Fourth Proportional to 15,849.51, 21,873.56 and 8,776.59

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Solution

The fourth proportional to 15,849.51, 21,873.56 and 8,776.59 is: 12,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.51 : 21,873.56 = 8,776.59 : x
  2. Step 2: Convert to fraction form
    15,849.51/21,873.56 = 8,776.59/x
  3. Step 3: Cross multiply
    15,849.51x = 21,873.56 × 8,776.59
  4. Step 4: Simplify right side
    15,849.51x = 191,975,224.08
  5. Step 5: Solve for x
    x = 191,975,224.08/15,849.51
  6. Step 6: Final answer
    x = 12,112.38

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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.