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Finding the Fourth Proportional to 61,980.36, 85,532.64 and 35,127.96

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Solution

The fourth proportional to 61,980.36, 85,532.64 and 35,127.96 is: 48,476.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,980.36 : 85,532.64 = 35,127.96 : x
  2. Step 2: Convert to fraction form
    61,980.36/85,532.64 = 35,127.96/x
  3. Step 3: Cross multiply
    61,980.36x = 85,532.64 × 35,127.96
  4. Step 4: Simplify right side
    61,980.36x = 3,004,587,156.61
  5. Step 5: Solve for x
    x = 3,004,587,156.61/61,980.36
  6. Step 6: Final answer
    x = 48,476.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.