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Finding the Fourth Proportional to 18,393.99, 25,385.81 and 10,437.66

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Solution

The fourth proportional to 18,393.99, 25,385.81 and 10,437.66 is: 14,405.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.99 : 25,385.81 = 10,437.66 : x
  2. Step 2: Convert to fraction form
    18,393.99/25,385.81 = 10,437.66/x
  3. Step 3: Cross multiply
    18,393.99x = 25,385.81 × 10,437.66
  4. Step 4: Simplify right side
    18,393.99x = 264,968,401.42
  5. Step 5: Solve for x
    x = 264,968,401.42/18,393.99
  6. Step 6: Final answer
    x = 14,405.16

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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.