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Finding the Fourth Proportional to 613,107.63, 919,817.01 and 192,387.15

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Solution

The fourth proportional to 613,107.63, 919,817.01 and 192,387.15 is: 288,629.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,107.63 : 919,817.01 = 192,387.15 : x
  2. Step 2: Convert to fraction form
    613,107.63/919,817.01 = 192,387.15/x
  3. Step 3: Cross multiply
    613,107.63x = 919,817.01 × 192,387.15
  4. Step 4: Simplify right side
    613,107.63x = 176,960,973,075.42
  5. Step 5: Solve for x
    x = 176,960,973,075.42/613,107.63
  6. Step 6: Final answer
    x = 288,629.54

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1.5x scale

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.