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Finding the Fourth Proportional to 25,696.80, 38,547.09 and 10,904.04

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Solution

The fourth proportional to 25,696.80, 38,547.09 and 10,904.04 is: 16,356.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,696.80 : 38,547.09 = 10,904.04 : x
  2. Step 2: Convert to fraction form
    25,696.80/38,547.09 = 10,904.04/x
  3. Step 3: Cross multiply
    25,696.80x = 38,547.09 × 10,904.04
  4. Step 4: Simplify right side
    25,696.80x = 420,319,011.24
  5. Step 5: Solve for x
    x = 420,319,011.24/25,696.80
  6. Step 6: Final answer
    x = 16,356.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.