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Finding the Fourth Proportional to 17,762.10, 26,643.15 and 13,355.70

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Solution

The fourth proportional to 17,762.10, 26,643.15 and 13,355.70 is: 20,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,762.10 : 26,643.15 = 13,355.70 : x
  2. Step 2: Convert to fraction form
    17,762.10/26,643.15 = 13,355.70/x
  3. Step 3: Cross multiply
    17,762.10x = 26,643.15 × 13,355.70
  4. Step 4: Simplify right side
    17,762.10x = 355,837,918.46
  5. Step 5: Solve for x
    x = 355,837,918.46/17,762.10
  6. Step 6: Final answer
    x = 20,033.55

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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.