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Finding the Fourth Proportional to 125,361.55, 187,865.51 and 69,226.93

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Solution

The fourth proportional to 125,361.55, 187,865.51 and 69,226.93 is: 103,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,361.55 : 187,865.51 = 69,226.93 : x
  2. Step 2: Convert to fraction form
    125,361.55/187,865.51 = 69,226.93/x
  3. Step 3: Cross multiply
    125,361.55x = 187,865.51 × 69,226.93
  4. Step 4: Simplify right side
    125,361.55x = 13,005,352,510.18
  5. Step 5: Solve for x
    x = 13,005,352,510.18/125,361.55
  6. Step 6: Final answer
    x = 103,742.75

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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.