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Finding the Fourth Proportional to 72,333.90, 108,468.45 and 32,870.70

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Solution

The fourth proportional to 72,333.90, 108,468.45 and 32,870.70 is: 49,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,333.90 : 108,468.45 = 32,870.70 : x
  2. Step 2: Convert to fraction form
    72,333.90/108,468.45 = 32,870.70/x
  3. Step 3: Cross multiply
    72,333.90x = 108,468.45 × 32,870.70
  4. Step 4: Simplify right side
    72,333.90x = 3,565,433,879.42
  5. Step 5: Solve for x
    x = 3,565,433,879.42/72,333.90
  6. Step 6: Final answer
    x = 49,291.33

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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.