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Finding the Fourth Proportional to 117,491.58, 162,172.59 and 71,567.82

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Solution

The fourth proportional to 117,491.58, 162,172.59 and 71,567.82 is: 98,784.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,491.58 : 162,172.59 = 71,567.82 : x
  2. Step 2: Convert to fraction form
    117,491.58/162,172.59 = 71,567.82/x
  3. Step 3: Cross multiply
    117,491.58x = 162,172.59 × 71,567.82
  4. Step 4: Simplify right side
    117,491.58x = 11,606,338,730.05
  5. Step 5: Solve for x
    x = 11,606,338,730.05/117,491.58
  6. Step 6: Final answer
    x = 98,784.43

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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.