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Finding the Fourth Proportional to 18,497.77, 25,520.78 and 10,430.42

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Solution

The fourth proportional to 18,497.77, 25,520.78 and 10,430.42 is: 14,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,497.77 : 25,520.78 = 10,430.42 : x
  2. Step 2: Convert to fraction form
    18,497.77/25,520.78 = 10,430.42/x
  3. Step 3: Cross multiply
    18,497.77x = 25,520.78 × 10,430.42
  4. Step 4: Simplify right side
    18,497.77x = 266,192,352.60
  5. Step 5: Solve for x
    x = 266,192,352.60/18,497.77
  6. Step 6: Final answer
    x = 14,390.51

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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.