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Finding the Fourth Proportional to 228,572.10, 342,880.70 and 78,792.67

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Solution

The fourth proportional to 228,572.10, 342,880.70 and 78,792.67 is: 118,196.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,572.10 : 342,880.70 = 78,792.67 : x
  2. Step 2: Convert to fraction form
    228,572.10/342,880.70 = 78,792.67/x
  3. Step 3: Cross multiply
    228,572.10x = 342,880.70 × 78,792.67
  4. Step 4: Simplify right side
    228,572.10x = 27,016,485,844.47
  5. Step 5: Solve for x
    x = 27,016,485,844.47/228,572.10
  6. Step 6: Final answer
    x = 118,196.78

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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.