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Finding the Fourth Proportional to 476,213.32, 657,153.30 and 261,353.80

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Solution

The fourth proportional to 476,213.32, 657,153.30 and 261,353.80 is: 360,656.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,213.32 : 657,153.30 = 261,353.80 : x
  2. Step 2: Convert to fraction form
    476,213.32/657,153.30 = 261,353.80/x
  3. Step 3: Cross multiply
    476,213.32x = 657,153.30 × 261,353.80
  4. Step 4: Simplify right side
    476,213.32x = 171,749,512,137.54
  5. Step 5: Solve for x
    x = 171,749,512,137.54/476,213.32
  6. Step 6: Final answer
    x = 360,656.67

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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.