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Finding the Fourth Proportional to 361,603.80, 542,415.30 and 112,291.80

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Solution

The fourth proportional to 361,603.80, 542,415.30 and 112,291.80 is: 168,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,603.80 : 542,415.30 = 112,291.80 : x
  2. Step 2: Convert to fraction form
    361,603.80/542,415.30 = 112,291.80/x
  3. Step 3: Cross multiply
    361,603.80x = 542,415.30 × 112,291.80
  4. Step 4: Simplify right side
    361,603.80x = 60,908,790,384.54
  5. Step 5: Solve for x
    x = 60,908,790,384.54/361,603.80
  6. Step 6: Final answer
    x = 168,440.68

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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.