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Finding the Fourth Proportional to 18,587.64, 25,651.40 and 10,090.11

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Solution

The fourth proportional to 18,587.64, 25,651.40 and 10,090.11 is: 13,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.64 : 25,651.40 = 10,090.11 : x
  2. Step 2: Convert to fraction form
    18,587.64/25,651.40 = 10,090.11/x
  3. Step 3: Cross multiply
    18,587.64x = 25,651.40 × 10,090.11
  4. Step 4: Simplify right side
    18,587.64x = 258,825,550.15
  5. Step 5: Solve for x
    x = 258,825,550.15/18,587.64
  6. Step 6: Final answer
    x = 13,924.60

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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.