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Finding the Fourth Proportional to 8,975.64, 12,386.05 and 4,996.67

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Solution

The fourth proportional to 8,975.64, 12,386.05 and 4,996.67 is: 6,895.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.64 : 12,386.05 = 4,996.67 : x
  2. Step 2: Convert to fraction form
    8,975.64/12,386.05 = 4,996.67/x
  3. Step 3: Cross multiply
    8,975.64x = 12,386.05 × 4,996.67
  4. Step 4: Simplify right side
    8,975.64x = 61,888,917.54
  5. Step 5: Solve for x
    x = 61,888,917.54/8,975.64
  6. Step 6: Final answer
    x = 6,895.21

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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.