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Finding the Fourth Proportional to 9,879.16, 14,826.24 and 4,688.68

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Solution

The fourth proportional to 9,879.16, 14,826.24 and 4,688.68 is: 7,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.16 : 14,826.24 = 4,688.68 : x
  2. Step 2: Convert to fraction form
    9,879.16/14,826.24 = 4,688.68/x
  3. Step 3: Cross multiply
    9,879.16x = 14,826.24 × 4,688.68
  4. Step 4: Simplify right side
    9,879.16x = 69,515,494.96
  5. Step 5: Solve for x
    x = 69,515,494.96/9,879.16
  6. Step 6: Final answer
    x = 7,036.58

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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.