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Finding the Fourth Proportional to 5,368.77, 8,042.21 and 4,815.63

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Solution

The fourth proportional to 5,368.77, 8,042.21 and 4,815.63 is: 7,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.77 : 8,042.21 = 4,815.63 : x
  2. Step 2: Convert to fraction form
    5,368.77/8,042.21 = 4,815.63/x
  3. Step 3: Cross multiply
    5,368.77x = 8,042.21 × 4,815.63
  4. Step 4: Simplify right side
    5,368.77x = 38,728,283.66
  5. Step 5: Solve for x
    x = 38,728,283.66/5,368.77
  6. Step 6: Final answer
    x = 7,213.62

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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.