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Finding the Fourth Proportional to 19,308.92, 26,644.88 and 10,809.08

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Solution

The fourth proportional to 19,308.92, 26,644.88 and 10,809.08 is: 14,915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,308.92 : 26,644.88 = 10,809.08 : x
  2. Step 2: Convert to fraction form
    19,308.92/26,644.88 = 10,809.08/x
  3. Step 3: Cross multiply
    19,308.92x = 26,644.88 × 10,809.08
  4. Step 4: Simplify right side
    19,308.92x = 288,006,642.65
  5. Step 5: Solve for x
    x = 288,006,642.65/19,308.92
  6. Step 6: Final answer
    x = 14,915.73

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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.