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Finding the Fourth Proportional to 14,891.53, 20,550.34 and 8,603.91

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Solution

The fourth proportional to 14,891.53, 20,550.34 and 8,603.91 is: 11,873.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891.53 : 20,550.34 = 8,603.91 : x
  2. Step 2: Convert to fraction form
    14,891.53/20,550.34 = 8,603.91/x
  3. Step 3: Cross multiply
    14,891.53x = 20,550.34 × 8,603.91
  4. Step 4: Simplify right side
    14,891.53x = 176,813,275.83
  5. Step 5: Solve for x
    x = 176,813,275.83/14,891.53
  6. Step 6: Final answer
    x = 11,873.41

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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.