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Finding the Fourth Proportional to 18,242.60, 25,174.76 and 9,859.10

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Solution

The fourth proportional to 18,242.60, 25,174.76 and 9,859.10 is: 13,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,242.60 : 25,174.76 = 9,859.10 : x
  2. Step 2: Convert to fraction form
    18,242.60/25,174.76 = 9,859.10/x
  3. Step 3: Cross multiply
    18,242.60x = 25,174.76 × 9,859.10
  4. Step 4: Simplify right side
    18,242.60x = 248,200,476.32
  5. Step 5: Solve for x
    x = 248,200,476.32/18,242.60
  6. Step 6: Final answer
    x = 13,605.54

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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.