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Finding the Fourth Proportional to 529,223.70, 730,325.79 and 287,504.34

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Solution

The fourth proportional to 529,223.70, 730,325.79 and 287,504.34 is: 396,754.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,223.70 : 730,325.79 = 287,504.34 : x
  2. Step 2: Convert to fraction form
    529,223.70/730,325.79 = 287,504.34/x
  3. Step 3: Cross multiply
    529,223.70x = 730,325.79 × 287,504.34
  4. Step 4: Simplify right side
    529,223.70x = 209,971,834,238.93
  5. Step 5: Solve for x
    x = 209,971,834,238.93/529,223.70
  6. Step 6: Final answer
    x = 396,754.41

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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.