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Finding the Fourth Proportional to 119,114.56, 164,378.19 and 65,400.94

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Solution

The fourth proportional to 119,114.56, 164,378.19 and 65,400.94 is: 90,253.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,114.56 : 164,378.19 = 65,400.94 : x
  2. Step 2: Convert to fraction form
    119,114.56/164,378.19 = 65,400.94/x
  3. Step 3: Cross multiply
    119,114.56x = 164,378.19 × 65,400.94
  4. Step 4: Simplify right side
    119,114.56x = 10,750,488,141.50
  5. Step 5: Solve for x
    x = 10,750,488,141.50/119,114.56
  6. Step 6: Final answer
    x = 90,253.35

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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.