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Finding the Fourth Proportional to 125,361.98, 187,866.16 and 69,227.36

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Solution

The fourth proportional to 125,361.98, 187,866.16 and 69,227.36 is: 103,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,361.98 : 187,866.16 = 69,227.36 : x
  2. Step 2: Convert to fraction form
    125,361.98/187,866.16 = 69,227.36/x
  3. Step 3: Cross multiply
    125,361.98x = 187,866.16 × 69,227.36
  4. Step 4: Simplify right side
    125,361.98x = 13,005,477,944.00
  5. Step 5: Solve for x
    x = 13,005,477,944.00/125,361.98
  6. Step 6: Final answer
    x = 103,743.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.