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Finding the Fourth Proportional to 19,649.92, 27,117.54 and 10,697.80

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Solution

The fourth proportional to 19,649.92, 27,117.54 and 10,697.80 is: 14,763.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,649.92 : 27,117.54 = 10,697.80 : x
  2. Step 2: Convert to fraction form
    19,649.92/27,117.54 = 10,697.80/x
  3. Step 3: Cross multiply
    19,649.92x = 27,117.54 × 10,697.80
  4. Step 4: Simplify right side
    19,649.92x = 290,098,019.41
  5. Step 5: Solve for x
    x = 290,098,019.41/19,649.92
  6. Step 6: Final answer
    x = 14,763.32

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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.