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Finding the Fourth Proportional to 651,946.75, 899,874.16 and 393,782.67

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Solution

The fourth proportional to 651,946.75, 899,874.16 and 393,782.67 is: 543,533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,946.75 : 899,874.16 = 393,782.67 : x
  2. Step 2: Convert to fraction form
    651,946.75/899,874.16 = 393,782.67/x
  3. Step 3: Cross multiply
    651,946.75x = 899,874.16 × 393,782.67
  4. Step 4: Simplify right side
    651,946.75x = 354,354,848,404.35
  5. Step 5: Solve for x
    x = 354,354,848,404.35/651,946.75
  6. Step 6: Final answer
    x = 543,533.42

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Half scale
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Double scale
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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.