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Finding the Fourth Proportional to 18,467.87, 25,486.31 and 10,509.93

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Solution

The fourth proportional to 18,467.87, 25,486.31 and 10,509.93 is: 14,504.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467.87 : 25,486.31 = 10,509.93 : x
  2. Step 2: Convert to fraction form
    18,467.87/25,486.31 = 10,509.93/x
  3. Step 3: Cross multiply
    18,467.87x = 25,486.31 × 10,509.93
  4. Step 4: Simplify right side
    18,467.87x = 267,859,281.51
  5. Step 5: Solve for x
    x = 267,859,281.51/18,467.87
  6. Step 6: Final answer
    x = 14,504.07

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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.