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Finding the Fourth Proportional to 14,605.17, 21,908.48 and 7,115.60

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Solution

The fourth proportional to 14,605.17, 21,908.48 and 7,115.60 is: 10,673.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605.17 : 21,908.48 = 7,115.60 : x
  2. Step 2: Convert to fraction form
    14,605.17/21,908.48 = 7,115.60/x
  3. Step 3: Cross multiply
    14,605.17x = 21,908.48 × 7,115.60
  4. Step 4: Simplify right side
    14,605.17x = 155,891,999.48
  5. Step 5: Solve for x
    x = 155,891,999.48/14,605.17
  6. Step 6: Final answer
    x = 10,673.76

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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.