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Finding the Fourth Proportional to 630,175.80, 945,378.90 and 256,236.60

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Solution

The fourth proportional to 630,175.80, 945,378.90 and 256,236.60 is: 384,401.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,175.80 : 945,378.90 = 256,236.60 : x
  2. Step 2: Convert to fraction form
    630,175.80/945,378.90 = 256,236.60/x
  3. Step 3: Cross multiply
    630,175.80x = 945,378.90 × 256,236.60
  4. Step 4: Simplify right side
    630,175.80x = 242,240,675,047.74
  5. Step 5: Solve for x
    x = 242,240,675,047.74/630,175.80
  6. Step 6: Final answer
    x = 384,401.74

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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.