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Finding the Fourth Proportional to 443,907.54, 612,445.35 and 250,290.91

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Solution

The fourth proportional to 443,907.54, 612,445.35 and 250,290.91 is: 345,318.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,907.54 : 612,445.35 = 250,290.91 : x
  2. Step 2: Convert to fraction form
    443,907.54/612,445.35 = 250,290.91/x
  3. Step 3: Cross multiply
    443,907.54x = 612,445.35 × 250,290.91
  4. Step 4: Simplify right side
    443,907.54x = 153,289,505,680.92
  5. Step 5: Solve for x
    x = 153,289,505,680.92/443,907.54
  6. Step 6: Final answer
    x = 345,318.54

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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.