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Finding the Fourth Proportional to 61,270.59, 91,776.72 and 28,018.64

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Solution

The fourth proportional to 61,270.59, 91,776.72 and 28,018.64 is: 41,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,270.59 : 91,776.72 = 28,018.64 : x
  2. Step 2: Convert to fraction form
    61,270.59/91,776.72 = 28,018.64/x
  3. Step 3: Cross multiply
    61,270.59x = 91,776.72 × 28,018.64
  4. Step 4: Simplify right side
    61,270.59x = 2,571,458,419.18
  5. Step 5: Solve for x
    x = 2,571,458,419.18/61,270.59
  6. Step 6: Final answer
    x = 41,968.89

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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.