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Finding the Fourth Proportional to 13,226.88, 18,253.31 and 7,259.10

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Solution

The fourth proportional to 13,226.88, 18,253.31 and 7,259.10 is: 10,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,226.88 : 18,253.31 = 7,259.10 : x
  2. Step 2: Convert to fraction form
    13,226.88/18,253.31 = 7,259.10/x
  3. Step 3: Cross multiply
    13,226.88x = 18,253.31 × 7,259.10
  4. Step 4: Simplify right side
    13,226.88x = 132,502,602.62
  5. Step 5: Solve for x
    x = 132,502,602.62/13,226.88
  6. Step 6: Final answer
    x = 10,017.68

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Double scale
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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.