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Finding the Fourth Proportional to 252,111, 347,913.18 and 138,933.75

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Solution

The fourth proportional to 252,111, 347,913.18 and 138,933.75 is: 191,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,111 : 347,913.18 = 138,933.75 : x
  2. Step 2: Convert to fraction form
    252,111/347,913.18 = 138,933.75/x
  3. Step 3: Cross multiply
    252,111x = 347,913.18 × 138,933.75
  4. Step 4: Simplify right side
    252,111x = 48,336,882,771.83
  5. Step 5: Solve for x
    x = 48,336,882,771.83/252,111
  6. Step 6: Final answer
    x = 191,728.58

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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.