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Finding the Fourth Proportional to 14,603.25, 20,152.49 and 7,979.25

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Solution

The fourth proportional to 14,603.25, 20,152.49 and 7,979.25 is: 11,011.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,603.25 : 20,152.49 = 7,979.25 : x
  2. Step 2: Convert to fraction form
    14,603.25/20,152.49 = 7,979.25/x
  3. Step 3: Cross multiply
    14,603.25x = 20,152.49 × 7,979.25
  4. Step 4: Simplify right side
    14,603.25x = 160,801,715.94
  5. Step 5: Solve for x
    x = 160,801,715.94/14,603.25
  6. Step 6: Final answer
    x = 11,011.37

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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.