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Finding the Fourth Proportional to 120,269.81, 165,955.94 and 69,263.51

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Solution

The fourth proportional to 120,269.81, 165,955.94 and 69,263.51 is: 95,574.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,269.81 : 165,955.94 = 69,263.51 : x
  2. Step 2: Convert to fraction form
    120,269.81/165,955.94 = 69,263.51/x
  3. Step 3: Cross multiply
    120,269.81x = 165,955.94 × 69,263.51
  4. Step 4: Simplify right side
    120,269.81x = 11,494,689,993.39
  5. Step 5: Solve for x
    x = 11,494,689,993.39/120,269.81
  6. Step 6: Final answer
    x = 95,574.19

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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.