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Finding the Fourth Proportional to 61,935.21, 85,470.93 and 36,442.53

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Solution

The fourth proportional to 61,935.21, 85,470.93 and 36,442.53 is: 50,290.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,935.21 : 85,470.93 = 36,442.53 : x
  2. Step 2: Convert to fraction form
    61,935.21/85,470.93 = 36,442.53/x
  3. Step 3: Cross multiply
    61,935.21x = 85,470.93 × 36,442.53
  4. Step 4: Simplify right side
    61,935.21x = 3,114,776,930.65
  5. Step 5: Solve for x
    x = 3,114,776,930.65/61,935.21
  6. Step 6: Final answer
    x = 50,290.89

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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.