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Finding the Fourth Proportional to 492,057.90, 738,086.85 and 448,512.30

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Solution

The fourth proportional to 492,057.90, 738,086.85 and 448,512.30 is: 672,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,057.90 : 738,086.85 = 448,512.30 : x
  2. Step 2: Convert to fraction form
    492,057.90/738,086.85 = 448,512.30/x
  3. Step 3: Cross multiply
    492,057.90x = 738,086.85 × 448,512.30
  4. Step 4: Simplify right side
    492,057.90x = 331,041,030,693.26
  5. Step 5: Solve for x
    x = 331,041,030,693.26/492,057.90
  6. Step 6: Final answer
    x = 672,768.45

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Similar ratio
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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.