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Finding the Fourth Proportional to 25,483.76, 35,161.91 and 15,411.98

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Solution

The fourth proportional to 25,483.76, 35,161.91 and 15,411.98 is: 21,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,483.76 : 35,161.91 = 15,411.98 : x
  2. Step 2: Convert to fraction form
    25,483.76/35,161.91 = 15,411.98/x
  3. Step 3: Cross multiply
    25,483.76x = 35,161.91 × 15,411.98
  4. Step 4: Simplify right side
    25,483.76x = 541,914,477.87
  5. Step 5: Solve for x
    x = 541,914,477.87/25,483.76
  6. Step 6: Final answer
    x = 21,265.10

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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.