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Finding the Fourth Proportional to 19,505.41, 26,945.02 and 15,521.42

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Solution

The fourth proportional to 19,505.41, 26,945.02 and 15,521.42 is: 21,441.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,505.41 : 26,945.02 = 15,521.42 : x
  2. Step 2: Convert to fraction form
    19,505.41/26,945.02 = 15,521.42/x
  3. Step 3: Cross multiply
    19,505.41x = 26,945.02 × 15,521.42
  4. Step 4: Simplify right side
    19,505.41x = 418,225,062.53
  5. Step 5: Solve for x
    x = 418,225,062.53/19,505.41
  6. Step 6: Final answer
    x = 21,441.49

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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.