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Finding the Fourth Proportional to 13,894.74, 20,848.39 and 6,881.76

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Solution

The fourth proportional to 13,894.74, 20,848.39 and 6,881.76 is: 10,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.74 : 20,848.39 = 6,881.76 : x
  2. Step 2: Convert to fraction form
    13,894.74/20,848.39 = 6,881.76/x
  3. Step 3: Cross multiply
    13,894.74x = 20,848.39 × 6,881.76
  4. Step 4: Simplify right side
    13,894.74x = 143,473,599.16
  5. Step 5: Solve for x
    x = 143,473,599.16/13,894.74
  6. Step 6: Final answer
    x = 10,325.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.