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Finding the Fourth Proportional to 19,292.29, 28,939.04 and 6,641.91

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Solution

The fourth proportional to 19,292.29, 28,939.04 and 6,641.91 is: 9,963.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,292.29 : 28,939.04 = 6,641.91 : x
  2. Step 2: Convert to fraction form
    19,292.29/28,939.04 = 6,641.91/x
  3. Step 3: Cross multiply
    19,292.29x = 28,939.04 × 6,641.91
  4. Step 4: Simplify right side
    19,292.29x = 192,210,499.17
  5. Step 5: Solve for x
    x = 192,210,499.17/19,292.29
  6. Step 6: Final answer
    x = 9,963.07

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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.