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Finding the Fourth Proportional to 357,120.45, 492,832.27 and 195,990.49

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Solution

The fourth proportional to 357,120.45, 492,832.27 and 195,990.49 is: 270,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,120.45 : 492,832.27 = 195,990.49 : x
  2. Step 2: Convert to fraction form
    357,120.45/492,832.27 = 195,990.49/x
  3. Step 3: Cross multiply
    357,120.45x = 492,832.27 × 195,990.49
  4. Step 4: Simplify right side
    357,120.45x = 96,590,438,085.11
  5. Step 5: Solve for x
    x = 96,590,438,085.11/357,120.45
  6. Step 6: Final answer
    x = 270,470.20

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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.