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Finding the Fourth Proportional to 72,554, 108,830.99 and 47,588.28

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Solution

The fourth proportional to 72,554, 108,830.99 and 47,588.28 is: 71,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,554 : 108,830.99 = 47,588.28 : x
  2. Step 2: Convert to fraction form
    72,554/108,830.99 = 47,588.28/x
  3. Step 3: Cross multiply
    72,554x = 108,830.99 × 47,588.28
  4. Step 4: Simplify right side
    72,554x = 5,179,079,386.86
  5. Step 5: Solve for x
    x = 5,179,079,386.86/72,554
  6. Step 6: Final answer
    x = 71,382.41

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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.