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Finding the Fourth Proportional to 9,920.99, 14,874.20 and 4,730.51

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Solution

The fourth proportional to 9,920.99, 14,874.20 and 4,730.51 is: 7,092.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.99 : 14,874.20 = 4,730.51 : x
  2. Step 2: Convert to fraction form
    9,920.99/14,874.20 = 4,730.51/x
  3. Step 3: Cross multiply
    9,920.99x = 14,874.20 × 4,730.51
  4. Step 4: Simplify right side
    9,920.99x = 70,362,453.82
  5. Step 5: Solve for x
    x = 70,362,453.82/9,920.99
  6. Step 6: Final answer
    x = 7,092.29

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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.