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Finding the Fourth Proportional to 631,408.60, 947,112.90 and 188,176.60

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Solution

The fourth proportional to 631,408.60, 947,112.90 and 188,176.60 is: 282,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,408.60 : 947,112.90 = 188,176.60 : x
  2. Step 2: Convert to fraction form
    631,408.60/947,112.90 = 188,176.60/x
  3. Step 3: Cross multiply
    631,408.60x = 947,112.90 × 188,176.60
  4. Step 4: Simplify right side
    631,408.60x = 178,224,485,338.14
  5. Step 5: Solve for x
    x = 178,224,485,338.14/631,408.60
  6. Step 6: Final answer
    x = 282,264.90

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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.