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Finding the Fourth Proportional to 353,643.89, 488,039.58 and 192,509.69

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Solution

The fourth proportional to 353,643.89, 488,039.58 and 192,509.69 is: 265,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,643.89 : 488,039.58 = 192,509.69 : x
  2. Step 2: Convert to fraction form
    353,643.89/488,039.58 = 192,509.69/x
  3. Step 3: Cross multiply
    353,643.89x = 488,039.58 × 192,509.69
  4. Step 4: Simplify right side
    353,643.89x = 93,952,345,813.33
  5. Step 5: Solve for x
    x = 93,952,345,813.33/353,643.89
  6. Step 6: Final answer
    x = 265,669.36

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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.