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Finding the Fourth Proportional to 621,880.86, 858,185.53 and 349,948.60

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Solution

The fourth proportional to 621,880.86, 858,185.53 and 349,948.60 is: 482,923.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,880.86 : 858,185.53 = 349,948.60 : x
  2. Step 2: Convert to fraction form
    621,880.86/858,185.53 = 349,948.60/x
  3. Step 3: Cross multiply
    621,880.86x = 858,185.53 × 349,948.60
  4. Step 4: Simplify right side
    621,880.86x = 300,320,828,539.18
  5. Step 5: Solve for x
    x = 300,320,828,539.18/621,880.86
  6. Step 6: Final answer
    x = 482,923.42

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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.