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Finding the Fourth Proportional to 317,870.94, 438,669.63 and 174,640.26

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Solution

The fourth proportional to 317,870.94, 438,669.63 and 174,640.26 is: 241,007.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,870.94 : 438,669.63 = 174,640.26 : x
  2. Step 2: Convert to fraction form
    317,870.94/438,669.63 = 174,640.26/x
  3. Step 3: Cross multiply
    317,870.94x = 438,669.63 × 174,640.26
  4. Step 4: Simplify right side
    317,870.94x = 76,609,378,237.30
  5. Step 5: Solve for x
    x = 76,609,378,237.30/317,870.94
  6. Step 6: Final answer
    x = 241,007.81

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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.