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Finding the Fourth Proportional to 78,359.34, 108,135.89 and 44,825.34

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Solution

The fourth proportional to 78,359.34, 108,135.89 and 44,825.34 is: 61,858.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.34 : 108,135.89 = 44,825.34 : x
  2. Step 2: Convert to fraction form
    78,359.34/108,135.89 = 44,825.34/x
  3. Step 3: Cross multiply
    78,359.34x = 108,135.89 × 44,825.34
  4. Step 4: Simplify right side
    78,359.34x = 4,847,228,637.07
  5. Step 5: Solve for x
    x = 4,847,228,637.07/78,359.34
  6. Step 6: Final answer
    x = 61,858.97

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1.5x scale

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.