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Finding the Fourth Proportional to 8,821.30, 13,235.01 and 5,871.58

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Solution

The fourth proportional to 8,821.30, 13,235.01 and 5,871.58 is: 8,809.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.30 : 13,235.01 = 5,871.58 : x
  2. Step 2: Convert to fraction form
    8,821.30/13,235.01 = 5,871.58/x
  3. Step 3: Cross multiply
    8,821.30x = 13,235.01 × 5,871.58
  4. Step 4: Simplify right side
    8,821.30x = 77,710,420.02
  5. Step 5: Solve for x
    x = 77,710,420.02/8,821.30
  6. Step 6: Final answer
    x = 8,809.41

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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.