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Finding the Fourth Proportional to 119,361.74, 164,719.67 and 65,650.15

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Solution

The fourth proportional to 119,361.74, 164,719.67 and 65,650.15 is: 90,597.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,361.74 : 164,719.67 = 65,650.15 : x
  2. Step 2: Convert to fraction form
    119,361.74/164,719.67 = 65,650.15/x
  3. Step 3: Cross multiply
    119,361.74x = 164,719.67 × 65,650.15
  4. Step 4: Simplify right side
    119,361.74x = 10,813,870,303.40
  5. Step 5: Solve for x
    x = 10,813,870,303.40/119,361.74
  6. Step 6: Final answer
    x = 90,597.46

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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.