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Finding the Fourth Proportional to 5,239.84, 7,842.48 and 4,663.84

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Solution

The fourth proportional to 5,239.84, 7,842.48 and 4,663.84 is: 6,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.84 : 7,842.48 = 4,663.84 : x
  2. Step 2: Convert to fraction form
    5,239.84/7,842.48 = 4,663.84/x
  3. Step 3: Cross multiply
    5,239.84x = 7,842.48 × 4,663.84
  4. Step 4: Simplify right side
    5,239.84x = 36,576,071.92
  5. Step 5: Solve for x
    x = 36,576,071.92/5,239.84
  6. Step 6: Final answer
    x = 6,980.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.