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Finding the Fourth Proportional to 492,718.30, 739,077.45 and 374,620.30

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Solution

The fourth proportional to 492,718.30, 739,077.45 and 374,620.30 is: 561,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,718.30 : 739,077.45 = 374,620.30 : x
  2. Step 2: Convert to fraction form
    492,718.30/739,077.45 = 374,620.30/x
  3. Step 3: Cross multiply
    492,718.30x = 739,077.45 × 374,620.30
  4. Step 4: Simplify right side
    492,718.30x = 276,873,416,042.24
  5. Step 5: Solve for x
    x = 276,873,416,042.24/492,718.30
  6. Step 6: Final answer
    x = 561,930.45

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Double scale
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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.