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Finding the Fourth Proportional to 18,362.48, 25,340.16 and 10,406.23

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Solution

The fourth proportional to 18,362.48, 25,340.16 and 10,406.23 is: 14,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.48 : 25,340.16 = 10,406.23 : x
  2. Step 2: Convert to fraction form
    18,362.48/25,340.16 = 10,406.23/x
  3. Step 3: Cross multiply
    18,362.48x = 25,340.16 × 10,406.23
  4. Step 4: Simplify right side
    18,362.48x = 263,695,469.85
  5. Step 5: Solve for x
    x = 263,695,469.85/18,362.48
  6. Step 6: Final answer
    x = 14,360.56

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Half scale
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Double scale
Find fourth proportional to 18,363.48, 25,341.54 and 10,407.23
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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.