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Finding the Fourth Proportional to 397,404.90, 594,552.15 and 257,436.90

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Solution

The fourth proportional to 397,404.90, 594,552.15 and 257,436.90 is: 385,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,404.90 : 594,552.15 = 257,436.90 : x
  2. Step 2: Convert to fraction form
    397,404.90/594,552.15 = 257,436.90/x
  3. Step 3: Cross multiply
    397,404.90x = 594,552.15 × 257,436.90
  4. Step 4: Simplify right side
    397,404.90x = 153,059,662,384.34
  5. Step 5: Solve for x
    x = 153,059,662,384.34/397,404.90
  6. Step 6: Final answer
    x = 385,147.90

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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.