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Finding the Fourth Proportional to 7,193.46, 9,917.40 and 5,393.28

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Solution

The fourth proportional to 7,193.46, 9,917.40 and 5,393.28 is: 7,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,193.46 : 9,917.40 = 5,393.28 : x
  2. Step 2: Convert to fraction form
    7,193.46/9,917.40 = 5,393.28/x
  3. Step 3: Cross multiply
    7,193.46x = 9,917.40 × 5,393.28
  4. Step 4: Simplify right side
    7,193.46x = 53,487,315.07
  5. Step 5: Solve for x
    x = 53,487,315.07/7,193.46
  6. Step 6: Final answer
    x = 7,435.55

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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.