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Finding the Fourth Proportional to 354,928.80, 532,130.60 and 167,721.60

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Solution

The fourth proportional to 354,928.80, 532,130.60 and 167,721.60 is: 251,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,928.80 : 532,130.60 = 167,721.60 : x
  2. Step 2: Convert to fraction form
    354,928.80/532,130.60 = 167,721.60/x
  3. Step 3: Cross multiply
    354,928.80x = 532,130.60 × 167,721.60
  4. Step 4: Simplify right side
    354,928.80x = 89,249,795,640.96
  5. Step 5: Solve for x
    x = 89,249,795,640.96/354,928.80
  6. Step 6: Final answer
    x = 251,458.31

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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.