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Finding the Fourth Proportional to 14,294.56, 19,726.61 and 7,921.26

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Solution

The fourth proportional to 14,294.56, 19,726.61 and 7,921.26 is: 10,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,294.56 : 19,726.61 = 7,921.26 : x
  2. Step 2: Convert to fraction form
    14,294.56/19,726.61 = 7,921.26/x
  3. Step 3: Cross multiply
    14,294.56x = 19,726.61 × 7,921.26
  4. Step 4: Simplify right side
    14,294.56x = 156,259,531.46
  5. Step 5: Solve for x
    x = 156,259,531.46/14,294.56
  6. Step 6: Final answer
    x = 10,931.40

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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.