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Finding the Fourth Proportional to 430,170.63, 643,745.70 and 353,375.34

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Solution

The fourth proportional to 430,170.63, 643,745.70 and 353,375.34 is: 528,822.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,170.63 : 643,745.70 = 353,375.34 : x
  2. Step 2: Convert to fraction form
    430,170.63/643,745.70 = 353,375.34/x
  3. Step 3: Cross multiply
    430,170.63x = 643,745.70 × 353,375.34
  4. Step 4: Simplify right side
    430,170.63x = 227,483,855,611.04
  5. Step 5: Solve for x
    x = 227,483,855,611.04/430,170.63
  6. Step 6: Final answer
    x = 528,822.38

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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.