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Finding the Fourth Proportional to 119,319.94, 164,661.63 and 65,605.87

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Solution

The fourth proportional to 119,319.94, 164,661.63 and 65,605.87 is: 90,536.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,319.94 : 164,661.63 = 65,605.87 : x
  2. Step 2: Convert to fraction form
    119,319.94/164,661.63 = 65,605.87/x
  3. Step 3: Cross multiply
    119,319.94x = 164,661.63 × 65,605.87
  4. Step 4: Simplify right side
    119,319.94x = 10,802,769,491.77
  5. Step 5: Solve for x
    x = 10,802,769,491.77/119,319.94
  6. Step 6: Final answer
    x = 90,536.16

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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.