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Finding the Fourth Proportional to 17,094.40, 25,636.80 and 5,411.20

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Solution

The fourth proportional to 17,094.40, 25,636.80 and 5,411.20 is: 8,115.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,094.40 : 25,636.80 = 5,411.20 : x
  2. Step 2: Convert to fraction form
    17,094.40/25,636.80 = 5,411.20/x
  3. Step 3: Cross multiply
    17,094.40x = 25,636.80 × 5,411.20
  4. Step 4: Simplify right side
    17,094.40x = 138,725,852.16
  5. Step 5: Solve for x
    x = 138,725,852.16/17,094.40
  6. Step 6: Final answer
    x = 8,115.28

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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.