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Finding the Fourth Proportional to 61,762.77, 85,170.15 and 54,935.19

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Solution

The fourth proportional to 61,762.77, 85,170.15 and 54,935.19 is: 75,755.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,762.77 : 85,170.15 = 54,935.19 : x
  2. Step 2: Convert to fraction form
    61,762.77/85,170.15 = 54,935.19/x
  3. Step 3: Cross multiply
    61,762.77x = 85,170.15 × 54,935.19
  4. Step 4: Simplify right side
    61,762.77x = 4,678,838,372.58
  5. Step 5: Solve for x
    x = 4,678,838,372.58/61,762.77
  6. Step 6: Final answer
    x = 75,755.00

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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.