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Finding the Fourth Proportional to 61,074.48, 91,583.28 and 35,781.60

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Solution

The fourth proportional to 61,074.48, 91,583.28 and 35,781.60 is: 53,655.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,074.48 : 91,583.28 = 35,781.60 : x
  2. Step 2: Convert to fraction form
    61,074.48/91,583.28 = 35,781.60/x
  3. Step 3: Cross multiply
    61,074.48x = 91,583.28 × 35,781.60
  4. Step 4: Simplify right side
    61,074.48x = 3,276,996,291.65
  5. Step 5: Solve for x
    x = 3,276,996,291.65/61,074.48
  6. Step 6: Final answer
    x = 53,655.74

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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.