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Finding the Fourth Proportional to 228,571.91, 342,880.42 and 78,792.48

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Solution

The fourth proportional to 228,571.91, 342,880.42 and 78,792.48 is: 118,196.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,571.91 : 342,880.42 = 78,792.48 : x
  2. Step 2: Convert to fraction form
    228,571.91/342,880.42 = 78,792.48/x
  3. Step 3: Cross multiply
    228,571.91x = 342,880.42 × 78,792.48
  4. Step 4: Simplify right side
    228,571.91x = 27,016,398,635.24
  5. Step 5: Solve for x
    x = 27,016,398,635.24/228,571.91
  6. Step 6: Final answer
    x = 118,196.50

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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.