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Finding the Fourth Proportional to 190,391.59, 262,655.84 and 122,395.94

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Solution

The fourth proportional to 190,391.59, 262,655.84 and 122,395.94 is: 168,852.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,391.59 : 262,655.84 = 122,395.94 : x
  2. Step 2: Convert to fraction form
    190,391.59/262,655.84 = 122,395.94/x
  3. Step 3: Cross multiply
    190,391.59x = 262,655.84 × 122,395.94
  4. Step 4: Simplify right side
    190,391.59x = 32,148,008,433.29
  5. Step 5: Solve for x
    x = 32,148,008,433.29/190,391.59
  6. Step 6: Final answer
    x = 168,852.04

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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.