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Finding the Fourth Proportional to 631,597.44, 947,396.16 and 257,649.60

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Solution

The fourth proportional to 631,597.44, 947,396.16 and 257,649.60 is: 386,474.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,597.44 : 947,396.16 = 257,649.60 : x
  2. Step 2: Convert to fraction form
    631,597.44/947,396.16 = 257,649.60/x
  3. Step 3: Cross multiply
    631,597.44x = 947,396.16 × 257,649.60
  4. Step 4: Simplify right side
    631,597.44x = 244,096,241,665.54
  5. Step 5: Solve for x
    x = 244,096,241,665.54/631,597.44
  6. Step 6: Final answer
    x = 386,474.40

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Half scale
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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.