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Finding the Fourth Proportional to 17,640.16, 26,460.08 and 5,328.16

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Solution

The fourth proportional to 17,640.16, 26,460.08 and 5,328.16 is: 7,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,640.16 : 26,460.08 = 5,328.16 : x
  2. Step 2: Convert to fraction form
    17,640.16/26,460.08 = 5,328.16/x
  3. Step 3: Cross multiply
    17,640.16x = 26,460.08 × 5,328.16
  4. Step 4: Simplify right side
    17,640.16x = 140,983,539.85
  5. Step 5: Solve for x
    x = 140,983,539.85/17,640.16
  6. Step 6: Final answer
    x = 7,992.19

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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.