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Finding the Fourth Proportional to 207,480.60, 310,721.97 and 118,464.30

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Solution

The fourth proportional to 207,480.60, 310,721.97 and 118,464.30 is: 177,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,480.60 : 310,721.97 = 118,464.30 : x
  2. Step 2: Convert to fraction form
    207,480.60/310,721.97 = 118,464.30/x
  3. Step 3: Cross multiply
    207,480.60x = 310,721.97 × 118,464.30
  4. Step 4: Simplify right side
    207,480.60x = 36,809,460,670.67
  5. Step 5: Solve for x
    x = 36,809,460,670.67/207,480.60
  6. Step 6: Final answer
    x = 177,411.58

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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.