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Finding the Fourth Proportional to 18,762.63, 25,893.23 and 10,379.13

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Solution

The fourth proportional to 18,762.63, 25,893.23 and 10,379.13 is: 14,323.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.63 : 25,893.23 = 10,379.13 : x
  2. Step 2: Convert to fraction form
    18,762.63/25,893.23 = 10,379.13/x
  3. Step 3: Cross multiply
    18,762.63x = 25,893.23 × 10,379.13
  4. Step 4: Simplify right side
    18,762.63x = 268,749,200.29
  5. Step 5: Solve for x
    x = 268,749,200.29/18,762.63
  6. Step 6: Final answer
    x = 14,323.64

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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.