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Finding the Fourth Proportional to 8,772.88, 13,159.44 and 2,929.48

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Solution

The fourth proportional to 8,772.88, 13,159.44 and 2,929.48 is: 4,394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.88 : 13,159.44 = 2,929.48 : x
  2. Step 2: Convert to fraction form
    8,772.88/13,159.44 = 2,929.48/x
  3. Step 3: Cross multiply
    8,772.88x = 13,159.44 × 2,929.48
  4. Step 4: Simplify right side
    8,772.88x = 38,550,316.29
  5. Step 5: Solve for x
    x = 38,550,316.29/8,772.88
  6. Step 6: Final answer
    x = 4,394.26

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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.