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Finding the Fourth Proportional to 72,573.99, 108,867.87 and 28,204.17

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Solution

The fourth proportional to 72,573.99, 108,867.87 and 28,204.17 is: 42,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,573.99 : 108,867.87 = 28,204.17 : x
  2. Step 2: Convert to fraction form
    72,573.99/108,867.87 = 28,204.17/x
  3. Step 3: Cross multiply
    72,573.99x = 108,867.87 × 28,204.17
  4. Step 4: Simplify right side
    72,573.99x = 3,070,527,913.02
  5. Step 5: Solve for x
    x = 3,070,527,913.02/72,573.99
  6. Step 6: Final answer
    x = 42,308.93

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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.