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Finding the Fourth Proportional to 19,886.76, 27,444.18 and 10,934.76

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Solution

The fourth proportional to 19,886.76, 27,444.18 and 10,934.76 is: 15,090.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886.76 : 27,444.18 = 10,934.76 : x
  2. Step 2: Convert to fraction form
    19,886.76/27,444.18 = 10,934.76/x
  3. Step 3: Cross multiply
    19,886.76x = 27,444.18 × 10,934.76
  4. Step 4: Simplify right side
    19,886.76x = 300,095,665.62
  5. Step 5: Solve for x
    x = 300,095,665.62/19,886.76
  6. Step 6: Final answer
    x = 15,090.22

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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.