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Finding the Fourth Proportional to 125,491.04, 188,329.54 and 69,379.46

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Solution

The fourth proportional to 125,491.04, 188,329.54 and 69,379.46 is: 104,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,491.04 : 188,329.54 = 69,379.46 : x
  2. Step 2: Convert to fraction form
    125,491.04/188,329.54 = 69,379.46/x
  3. Step 3: Cross multiply
    125,491.04x = 188,329.54 × 69,379.46
  4. Step 4: Simplify right side
    125,491.04x = 13,066,201,787.25
  5. Step 5: Solve for x
    x = 13,066,201,787.25/125,491.04
  6. Step 6: Final answer
    x = 104,120.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.