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Finding the Fourth Proportional to 4,886.70, 7,330.05 and 3,039.90

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Solution

The fourth proportional to 4,886.70, 7,330.05 and 3,039.90 is: 4,559.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.70 : 7,330.05 = 3,039.90 : x
  2. Step 2: Convert to fraction form
    4,886.70/7,330.05 = 3,039.90/x
  3. Step 3: Cross multiply
    4,886.70x = 7,330.05 × 3,039.90
  4. Step 4: Simplify right side
    4,886.70x = 22,282,619.00
  5. Step 5: Solve for x
    x = 22,282,619.00/4,886.70
  6. Step 6: Final answer
    x = 4,559.85

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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.