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Finding the Fourth Proportional to 78,520.88, 108,361.48 and 44,993.36

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Solution

The fourth proportional to 78,520.88, 108,361.48 and 44,993.36 is: 62,092.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,520.88 : 108,361.48 = 44,993.36 : x
  2. Step 2: Convert to fraction form
    78,520.88/108,361.48 = 44,993.36/x
  3. Step 3: Cross multiply
    78,520.88x = 108,361.48 × 44,993.36
  4. Step 4: Simplify right side
    78,520.88x = 4,875,547,079.77
  5. Step 5: Solve for x
    x = 4,875,547,079.77/78,520.88
  6. Step 6: Final answer
    x = 62,092.36

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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.