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Finding the Fourth Proportional to 19,368.56, 26,726.28 and 10,984.88

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Solution

The fourth proportional to 19,368.56, 26,726.28 and 10,984.88 is: 15,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.56 : 26,726.28 = 10,984.88 : x
  2. Step 2: Convert to fraction form
    19,368.56/26,726.28 = 10,984.88/x
  3. Step 3: Cross multiply
    19,368.56x = 26,726.28 × 10,984.88
  4. Step 4: Simplify right side
    19,368.56x = 293,584,978.65
  5. Step 5: Solve for x
    x = 293,584,978.65/19,368.56
  6. Step 6: Final answer
    x = 15,157.81

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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.