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Finding the Fourth Proportional to 78,858.79, 108,823.70 and 44,866.53

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Solution

The fourth proportional to 78,858.79, 108,823.70 and 44,866.53 is: 61,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,858.79 : 108,823.70 = 44,866.53 : x
  2. Step 2: Convert to fraction form
    78,858.79/108,823.70 = 44,866.53/x
  3. Step 3: Cross multiply
    78,858.79x = 108,823.70 × 44,866.53
  4. Step 4: Simplify right side
    78,858.79x = 4,882,542,218.99
  5. Step 5: Solve for x
    x = 4,882,542,218.99/78,858.79
  6. Step 6: Final answer
    x = 61,915.00

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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.