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Finding the Fourth Proportional to 361,776.25, 542,989.60 and 193,440.47

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Solution

The fourth proportional to 361,776.25, 542,989.60 and 193,440.47 is: 290,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,776.25 : 542,989.60 = 193,440.47 : x
  2. Step 2: Convert to fraction form
    361,776.25/542,989.60 = 193,440.47/x
  3. Step 3: Cross multiply
    361,776.25x = 542,989.60 × 193,440.47
  4. Step 4: Simplify right side
    361,776.25x = 105,036,163,429.11
  5. Step 5: Solve for x
    x = 105,036,163,429.11/361,776.25
  6. Step 6: Final answer
    x = 290,334.60

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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.