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Finding the Fourth Proportional to 631,887.05, 947,830.57 and 211,162.92

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Solution

The fourth proportional to 631,887.05, 947,830.57 and 211,162.92 is: 316,744.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,887.05 : 947,830.57 = 211,162.92 : x
  2. Step 2: Convert to fraction form
    631,887.05/947,830.57 = 211,162.92/x
  3. Step 3: Cross multiply
    631,887.05x = 947,830.57 × 211,162.92
  4. Step 4: Simplify right side
    631,887.05x = 200,146,673,263.53
  5. Step 5: Solve for x
    x = 200,146,673,263.53/631,887.05
  6. Step 6: Final answer
    x = 316,744.38

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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.