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Finding the Fourth Proportional to 15,827.76, 21,842.46 and 8,754.84

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Solution

The fourth proportional to 15,827.76, 21,842.46 and 8,754.84 is: 12,081.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,827.76 : 21,842.46 = 8,754.84 : x
  2. Step 2: Convert to fraction form
    15,827.76/21,842.46 = 8,754.84/x
  3. Step 3: Cross multiply
    15,827.76x = 21,842.46 × 8,754.84
  4. Step 4: Simplify right side
    15,827.76x = 191,227,242.51
  5. Step 5: Solve for x
    x = 191,227,242.51/15,827.76
  6. Step 6: Final answer
    x = 12,081.76

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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.