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Finding the Fourth Proportional to 612,809.15, 919,361.33 and 192,085.02

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Solution

The fourth proportional to 612,809.15, 919,361.33 and 192,085.02 is: 288,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,809.15 : 919,361.33 = 192,085.02 : x
  2. Step 2: Convert to fraction form
    612,809.15/919,361.33 = 192,085.02/x
  3. Step 3: Cross multiply
    612,809.15x = 919,361.33 × 192,085.02
  4. Step 4: Simplify right side
    612,809.15x = 176,595,538,950.05
  5. Step 5: Solve for x
    x = 176,595,538,950.05/612,809.15
  6. Step 6: Final answer
    x = 288,173.80

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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.