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Finding the Fourth Proportional to 8,405.86, 11,598.33 and 4,868.86

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Solution

The fourth proportional to 8,405.86, 11,598.33 and 4,868.86 is: 6,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.86 : 11,598.33 = 4,868.86 : x
  2. Step 2: Convert to fraction form
    8,405.86/11,598.33 = 4,868.86/x
  3. Step 3: Cross multiply
    8,405.86x = 11,598.33 × 4,868.86
  4. Step 4: Simplify right side
    8,405.86x = 56,470,645.00
  5. Step 5: Solve for x
    x = 56,470,645.00/8,405.86
  6. Step 6: Final answer
    x = 6,718.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.