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Finding the Fourth Proportional to 14,390.76, 19,859.13 and 8,017.29

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Solution

The fourth proportional to 14,390.76, 19,859.13 and 8,017.29 is: 11,063.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.76 : 19,859.13 = 8,017.29 : x
  2. Step 2: Convert to fraction form
    14,390.76/19,859.13 = 8,017.29/x
  3. Step 3: Cross multiply
    14,390.76x = 19,859.13 × 8,017.29
  4. Step 4: Simplify right side
    14,390.76x = 159,216,404.36
  5. Step 5: Solve for x
    x = 159,216,404.36/14,390.76
  6. Step 6: Final answer
    x = 11,063.79

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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.