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Finding the Fourth Proportional to 61,136.80, 91,912.56 and 48,814.24

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Solution

The fourth proportional to 61,136.80, 91,912.56 and 48,814.24 is: 73,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,136.80 : 91,912.56 = 48,814.24 : x
  2. Step 2: Convert to fraction form
    61,136.80/91,912.56 = 48,814.24/x
  3. Step 3: Cross multiply
    61,136.80x = 91,912.56 × 48,814.24
  4. Step 4: Simplify right side
    61,136.80x = 4,486,641,762.85
  5. Step 5: Solve for x
    x = 4,486,641,762.85/61,136.80
  6. Step 6: Final answer
    x = 73,386.93

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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.