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Finding the Fourth Proportional to 366,881.81, 505,611.32 and 286,181.51

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Solution

The fourth proportional to 366,881.81, 505,611.32 and 286,181.51 is: 394,395.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,881.81 : 505,611.32 = 286,181.51 : x
  2. Step 2: Convert to fraction form
    366,881.81/505,611.32 = 286,181.51/x
  3. Step 3: Cross multiply
    366,881.81x = 505,611.32 × 286,181.51
  4. Step 4: Simplify right side
    366,881.81x = 144,696,607,071.73
  5. Step 5: Solve for x
    x = 144,696,607,071.73/366,881.81
  6. Step 6: Final answer
    x = 394,395.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.