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Finding the Fourth Proportional to 17,809.20, 26,662.60 and 10,897.20

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Solution

The fourth proportional to 17,809.20, 26,662.60 and 10,897.20 is: 16,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,809.20 : 26,662.60 = 10,897.20 : x
  2. Step 2: Convert to fraction form
    17,809.20/26,662.60 = 10,897.20/x
  3. Step 3: Cross multiply
    17,809.20x = 26,662.60 × 10,897.20
  4. Step 4: Simplify right side
    17,809.20x = 290,547,684.72
  5. Step 5: Solve for x
    x = 290,547,684.72/17,809.20
  6. Step 6: Final answer
    x = 16,314.47

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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.