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Finding the Fourth Proportional to 19,225.98, 26,530.74 and 10,728.90

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Solution

The fourth proportional to 19,225.98, 26,530.74 and 10,728.90 is: 14,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,225.98 : 26,530.74 = 10,728.90 : x
  2. Step 2: Convert to fraction form
    19,225.98/26,530.74 = 10,728.90/x
  3. Step 3: Cross multiply
    19,225.98x = 26,530.74 × 10,728.90
  4. Step 4: Simplify right side
    19,225.98x = 284,645,656.39
  5. Step 5: Solve for x
    x = 284,645,656.39/19,225.98
  6. Step 6: Final answer
    x = 14,805.26

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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.