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Finding the Fourth Proportional to 119,585.84, 165,028.65 and 65,871.01

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Solution

The fourth proportional to 119,585.84, 165,028.65 and 65,871.01 is: 90,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,585.84 : 165,028.65 = 65,871.01 : x
  2. Step 2: Convert to fraction form
    119,585.84/165,028.65 = 65,871.01/x
  3. Step 3: Cross multiply
    119,585.84x = 165,028.65 × 65,871.01
  4. Step 4: Simplify right side
    119,585.84x = 10,870,603,854.44
  5. Step 5: Solve for x
    x = 10,870,603,854.44/119,585.84
  6. Step 6: Final answer
    x = 90,902.10

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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.