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Finding the Fourth Proportional to 5,918.30, 8,866.65 and 4,816.70

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Solution

The fourth proportional to 5,918.30, 8,866.65 and 4,816.70 is: 7,216.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.30 : 8,866.65 = 4,816.70 : x
  2. Step 2: Convert to fraction form
    5,918.30/8,866.65 = 4,816.70/x
  3. Step 3: Cross multiply
    5,918.30x = 8,866.65 × 4,816.70
  4. Step 4: Simplify right side
    5,918.30x = 42,707,993.06
  5. Step 5: Solve for x
    x = 42,707,993.06/5,918.30
  6. Step 6: Final answer
    x = 7,216.26

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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.