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Finding the Fourth Proportional to 370,615.25, 510,388.31 and 347,521.27

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Solution

The fourth proportional to 370,615.25, 510,388.31 and 347,521.27 is: 478,584.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,615.25 : 510,388.31 = 347,521.27 : x
  2. Step 2: Convert to fraction form
    370,615.25/510,388.31 = 347,521.27/x
  3. Step 3: Cross multiply
    370,615.25x = 510,388.31 × 347,521.27
  4. Step 4: Simplify right side
    370,615.25x = 177,370,792,279.36
  5. Step 5: Solve for x
    x = 177,370,792,279.36/370,615.25
  6. Step 6: Final answer
    x = 478,584.71

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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.