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Finding the Fourth Proportional to 14,119.55, 19,479.44 and 9,869.48

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Solution

The fourth proportional to 14,119.55, 19,479.44 and 9,869.48 is: 13,616.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.55 : 19,479.44 = 9,869.48 : x
  2. Step 2: Convert to fraction form
    14,119.55/19,479.44 = 9,869.48/x
  3. Step 3: Cross multiply
    14,119.55x = 19,479.44 × 9,869.48
  4. Step 4: Simplify right side
    14,119.55x = 192,251,888.30
  5. Step 5: Solve for x
    x = 192,251,888.30/14,119.55
  6. Step 6: Final answer
    x = 13,616.01

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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.