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Finding the Fourth Proportional to 7,900.66, 10,903.44 and 4,364.20

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Solution

The fourth proportional to 7,900.66, 10,903.44 and 4,364.20 is: 6,022.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.66 : 10,903.44 = 4,364.20 : x
  2. Step 2: Convert to fraction form
    7,900.66/10,903.44 = 4,364.20/x
  3. Step 3: Cross multiply
    7,900.66x = 10,903.44 × 4,364.20
  4. Step 4: Simplify right side
    7,900.66x = 47,584,792.85
  5. Step 5: Solve for x
    x = 47,584,792.85/7,900.66
  6. Step 6: Final answer
    x = 6,022.89

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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.