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Finding the Fourth Proportional to 7,913.74, 10,911.04 and 5,076.11

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Solution

The fourth proportional to 7,913.74, 10,911.04 and 5,076.11 is: 6,998.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.74 : 10,911.04 = 5,076.11 : x
  2. Step 2: Convert to fraction form
    7,913.74/10,911.04 = 5,076.11/x
  3. Step 3: Cross multiply
    7,913.74x = 10,911.04 × 5,076.11
  4. Step 4: Simplify right side
    7,913.74x = 55,385,639.25
  5. Step 5: Solve for x
    x = 55,385,639.25/7,913.74
  6. Step 6: Final answer
    x = 6,998.67

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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.