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Finding the Fourth Proportional to 78,875.74, 108,851.25 and 44,889.31

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Solution

The fourth proportional to 78,875.74, 108,851.25 and 44,889.31 is: 61,948.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,875.74 : 108,851.25 = 44,889.31 : x
  2. Step 2: Convert to fraction form
    78,875.74/108,851.25 = 44,889.31/x
  3. Step 3: Cross multiply
    78,875.74x = 108,851.25 × 44,889.31
  4. Step 4: Simplify right side
    78,875.74x = 4,886,257,505.14
  5. Step 5: Solve for x
    x = 4,886,257,505.14/78,875.74
  6. Step 6: Final answer
    x = 61,948.80

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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.