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Finding the Fourth Proportional to 75,679, 104,444.38 and 56,525.50

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Solution

The fourth proportional to 75,679, 104,444.38 and 56,525.50 is: 78,010.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,679 : 104,444.38 = 56,525.50 : x
  2. Step 2: Convert to fraction form
    75,679/104,444.38 = 56,525.50/x
  3. Step 3: Cross multiply
    75,679x = 104,444.38 × 56,525.50
  4. Step 4: Simplify right side
    75,679x = 5,903,770,801.69
  5. Step 5: Solve for x
    x = 5,903,770,801.69/75,679
  6. Step 6: Final answer
    x = 78,010.69

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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.