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Finding the Fourth Proportional to 7,707.42, 11,493.46 and 7,637.25

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Solution

The fourth proportional to 7,707.42, 11,493.46 and 7,637.25 is: 11,388.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,707.42 : 11,493.46 = 7,637.25 : x
  2. Step 2: Convert to fraction form
    7,707.42/11,493.46 = 7,637.25/x
  3. Step 3: Cross multiply
    7,707.42x = 11,493.46 × 7,637.25
  4. Step 4: Simplify right side
    7,707.42x = 87,778,480.03
  5. Step 5: Solve for x
    x = 87,778,480.03/7,707.42
  6. Step 6: Final answer
    x = 11,388.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.