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Finding the Fourth Proportional to 19,616.07, 29,424.09 and 7,929.29

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Solution

The fourth proportional to 19,616.07, 29,424.09 and 7,929.29 is: 11,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,616.07 : 29,424.09 = 7,929.29 : x
  2. Step 2: Convert to fraction form
    19,616.07/29,424.09 = 7,929.29/x
  3. Step 3: Cross multiply
    19,616.07x = 29,424.09 × 7,929.29
  4. Step 4: Simplify right side
    19,616.07x = 233,311,995.48
  5. Step 5: Solve for x
    x = 233,311,995.48/19,616.07
  6. Step 6: Final answer
    x = 11,893.92

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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.