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Finding the Fourth Proportional to 19,343.59, 26,705.80 and 12,640.44

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Solution

The fourth proportional to 19,343.59, 26,705.80 and 12,640.44 is: 17,451.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,343.59 : 26,705.80 = 12,640.44 : x
  2. Step 2: Convert to fraction form
    19,343.59/26,705.80 = 12,640.44/x
  3. Step 3: Cross multiply
    19,343.59x = 26,705.80 × 12,640.44
  4. Step 4: Simplify right side
    19,343.59x = 337,572,897.42
  5. Step 5: Solve for x
    x = 337,572,897.42/19,343.59
  6. Step 6: Final answer
    x = 17,451.41

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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.