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Finding the Fourth Proportional to 7,909.73, 10,918.01 and 5,552.45

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Solution

The fourth proportional to 7,909.73, 10,918.01 and 5,552.45 is: 7,664.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.73 : 10,918.01 = 5,552.45 : x
  2. Step 2: Convert to fraction form
    7,909.73/10,918.01 = 5,552.45/x
  3. Step 3: Cross multiply
    7,909.73x = 10,918.01 × 5,552.45
  4. Step 4: Simplify right side
    7,909.73x = 60,621,663.92
  5. Step 5: Solve for x
    x = 60,621,663.92/7,909.73
  6. Step 6: Final answer
    x = 7,664.19

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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.