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Finding the Fourth Proportional to 18,587.71, 25,650.16 and 10,089.64

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Solution

The fourth proportional to 18,587.71, 25,650.16 and 10,089.64 is: 13,923.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.71 : 25,650.16 = 10,089.64 : x
  2. Step 2: Convert to fraction form
    18,587.71/25,650.16 = 10,089.64/x
  3. Step 3: Cross multiply
    18,587.71x = 25,650.16 × 10,089.64
  4. Step 4: Simplify right side
    18,587.71x = 258,800,880.34
  5. Step 5: Solve for x
    x = 258,800,880.34/18,587.71
  6. Step 6: Final answer
    x = 13,923.23

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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.