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Finding the Fourth Proportional to 61,246.40, 91,783.40 and 48,710.79

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Solution

The fourth proportional to 61,246.40, 91,783.40 and 48,710.79 is: 72,997.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,246.40 : 91,783.40 = 48,710.79 : x
  2. Step 2: Convert to fraction form
    61,246.40/91,783.40 = 48,710.79/x
  3. Step 3: Cross multiply
    61,246.40x = 91,783.40 × 48,710.79
  4. Step 4: Simplify right side
    61,246.40x = 4,470,841,679.33
  5. Step 5: Solve for x
    x = 4,470,841,679.33/61,246.40
  6. Step 6: Final answer
    x = 72,997.63

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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.