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Finding the Fourth Proportional to 61,090.20, 91,583.28 and 27,798.57

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Solution

The fourth proportional to 61,090.20, 91,583.28 and 27,798.57 is: 41,674.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,090.20 : 91,583.28 = 27,798.57 : x
  2. Step 2: Convert to fraction form
    61,090.20/91,583.28 = 27,798.57/x
  3. Step 3: Cross multiply
    61,090.20x = 91,583.28 × 27,798.57
  4. Step 4: Simplify right side
    61,090.20x = 2,545,884,219.91
  5. Step 5: Solve for x
    x = 2,545,884,219.91/61,090.20
  6. Step 6: Final answer
    x = 41,674.18

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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.