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Finding the Fourth Proportional to 61,776.66, 84,701.66 and 61,186.14

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Solution

The fourth proportional to 61,776.66, 84,701.66 and 61,186.14 is: 83,892.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,776.66 : 84,701.66 = 61,186.14 : x
  2. Step 2: Convert to fraction form
    61,776.66/84,701.66 = 61,186.14/x
  3. Step 3: Cross multiply
    61,776.66x = 84,701.66 × 61,186.14
  4. Step 4: Simplify right side
    61,776.66x = 5,182,567,321.06
  5. Step 5: Solve for x
    x = 5,182,567,321.06/61,776.66
  6. Step 6: Final answer
    x = 83,892.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.