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Finding the Fourth Proportional to 18,210.18, 25,129.77 and 10,252.38

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Solution

The fourth proportional to 18,210.18, 25,129.77 and 10,252.38 is: 14,148.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,210.18 : 25,129.77 = 10,252.38 : x
  2. Step 2: Convert to fraction form
    18,210.18/25,129.77 = 10,252.38/x
  3. Step 3: Cross multiply
    18,210.18x = 25,129.77 × 10,252.38
  4. Step 4: Simplify right side
    18,210.18x = 257,639,951.35
  5. Step 5: Solve for x
    x = 257,639,951.35/18,210.18
  6. Step 6: Final answer
    x = 14,148.13

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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.