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Finding the Fourth Proportional to 119,543.70, 164,946.27 and 90,855.73

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Solution

The fourth proportional to 119,543.70, 164,946.27 and 90,855.73 is: 125,362.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,543.70 : 164,946.27 = 90,855.73 : x
  2. Step 2: Convert to fraction form
    119,543.70/164,946.27 = 90,855.73/x
  3. Step 3: Cross multiply
    119,543.70x = 164,946.27 × 90,855.73
  4. Step 4: Simplify right side
    119,543.70x = 14,986,313,390.70
  5. Step 5: Solve for x
    x = 14,986,313,390.70/119,543.70
  6. Step 6: Final answer
    x = 125,362.64

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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.