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Finding the Fourth Proportional to 7,805.60, 10,768.72 and 4,816.26

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Solution

The fourth proportional to 7,805.60, 10,768.72 and 4,816.26 is: 6,644.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.60 : 10,768.72 = 4,816.26 : x
  2. Step 2: Convert to fraction form
    7,805.60/10,768.72 = 4,816.26/x
  3. Step 3: Cross multiply
    7,805.60x = 10,768.72 × 4,816.26
  4. Step 4: Simplify right side
    7,805.60x = 51,864,955.39
  5. Step 5: Solve for x
    x = 51,864,955.39/7,805.60
  6. Step 6: Final answer
    x = 6,644.58

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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.