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Finding the Fourth Proportional to 19,224.40, 28,836.60 and 14,040.40

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Solution

The fourth proportional to 19,224.40, 28,836.60 and 14,040.40 is: 21,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,224.40 : 28,836.60 = 14,040.40 : x
  2. Step 2: Convert to fraction form
    19,224.40/28,836.60 = 14,040.40/x
  3. Step 3: Cross multiply
    19,224.40x = 28,836.60 × 14,040.40
  4. Step 4: Simplify right side
    19,224.40x = 404,877,398.64
  5. Step 5: Solve for x
    x = 404,877,398.64/19,224.40
  6. Step 6: Final answer
    x = 21,060.60

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1.5x scale

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.