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Finding the Fourth Proportional to 85,583.59, 128,268.45 and 41,198.47

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Solution

The fourth proportional to 85,583.59, 128,268.45 and 41,198.47 is: 61,746.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,583.59 : 128,268.45 = 41,198.47 : x
  2. Step 2: Convert to fraction form
    85,583.59/128,268.45 = 41,198.47/x
  3. Step 3: Cross multiply
    85,583.59x = 128,268.45 × 41,198.47
  4. Step 4: Simplify right side
    85,583.59x = 5,284,463,889.27
  5. Step 5: Solve for x
    x = 5,284,463,889.27/85,583.59
  6. Step 6: Final answer
    x = 61,746.23

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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.