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Finding the Fourth Proportional to 7,098.48, 9,790.56 and 5,917.68

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Solution

The fourth proportional to 7,098.48, 9,790.56 and 5,917.68 is: 8,161.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,098.48 : 9,790.56 = 5,917.68 : x
  2. Step 2: Convert to fraction form
    7,098.48/9,790.56 = 5,917.68/x
  3. Step 3: Cross multiply
    7,098.48x = 9,790.56 × 5,917.68
  4. Step 4: Simplify right side
    7,098.48x = 57,937,401.10
  5. Step 5: Solve for x
    x = 57,937,401.10/7,098.48
  6. Step 6: Final answer
    x = 8,161.94

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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.