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Finding the Fourth Proportional to 7,220.84, 9,958.52 and 4,702

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Solution

The fourth proportional to 7,220.84, 9,958.52 and 4,702 is: 6,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.84 : 9,958.52 = 4,702 : x
  2. Step 2: Convert to fraction form
    7,220.84/9,958.52 = 4,702/x
  3. Step 3: Cross multiply
    7,220.84x = 9,958.52 × 4,702
  4. Step 4: Simplify right side
    7,220.84x = 46,824,961.04
  5. Step 5: Solve for x
    x = 46,824,961.04/7,220.84
  6. Step 6: Final answer
    x = 6,484.70

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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.