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Finding the Fourth Proportional to 8,665.76, 11,958.73 and 4,888.91

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Solution

The fourth proportional to 8,665.76, 11,958.73 and 4,888.91 is: 6,746.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.76 : 11,958.73 = 4,888.91 : x
  2. Step 2: Convert to fraction form
    8,665.76/11,958.73 = 4,888.91/x
  3. Step 3: Cross multiply
    8,665.76x = 11,958.73 × 4,888.91
  4. Step 4: Simplify right side
    8,665.76x = 58,465,172.36
  5. Step 5: Solve for x
    x = 58,465,172.36/8,665.76
  6. Step 6: Final answer
    x = 6,746.69

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1.5x scale

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.