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Finding the Fourth Proportional to 7,909.01, 10,914.30 and 5,644.52

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Solution

The fourth proportional to 7,909.01, 10,914.30 and 5,644.52 is: 7,789.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.01 : 10,914.30 = 5,644.52 : x
  2. Step 2: Convert to fraction form
    7,909.01/10,914.30 = 5,644.52/x
  3. Step 3: Cross multiply
    7,909.01x = 10,914.30 × 5,644.52
  4. Step 4: Simplify right side
    7,909.01x = 61,605,984.64
  5. Step 5: Solve for x
    x = 61,605,984.64/7,909.01
  6. Step 6: Final answer
    x = 7,789.34

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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.