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Finding the Fourth Proportional to 613,908.63, 921,005.40 and 193,173.57

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Solution

The fourth proportional to 613,908.63, 921,005.40 and 193,173.57 is: 289,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,908.63 : 921,005.40 = 193,173.57 : x
  2. Step 2: Convert to fraction form
    613,908.63/921,005.40 = 193,173.57/x
  3. Step 3: Cross multiply
    613,908.63x = 921,005.40 × 193,173.57
  4. Step 4: Simplify right side
    613,908.63x = 177,913,901,107.28
  5. Step 5: Solve for x
    x = 177,913,901,107.28/613,908.63
  6. Step 6: Final answer
    x = 289,805.18

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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.