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Finding the Fourth Proportional to 119,272.79, 164,594.31 and 65,557.79

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Solution

The fourth proportional to 119,272.79, 164,594.31 and 65,557.79 is: 90,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,272.79 : 164,594.31 = 65,557.79 : x
  2. Step 2: Convert to fraction form
    119,272.79/164,594.31 = 65,557.79/x
  3. Step 3: Cross multiply
    119,272.79x = 164,594.31 × 65,557.79
  4. Step 4: Simplify right side
    119,272.79x = 10,790,439,127.35
  5. Step 5: Solve for x
    x = 10,790,439,127.35/119,272.79
  6. Step 6: Final answer
    x = 90,468.58

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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.