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Finding the Fourth Proportional to 213,915.94, 295,203.99 and 118,428.78

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Solution

The fourth proportional to 213,915.94, 295,203.99 and 118,428.78 is: 163,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,915.94 : 295,203.99 = 118,428.78 : x
  2. Step 2: Convert to fraction form
    213,915.94/295,203.99 = 118,428.78/x
  3. Step 3: Cross multiply
    213,915.94x = 295,203.99 × 118,428.78
  4. Step 4: Simplify right side
    213,915.94x = 34,960,649,937.96
  5. Step 5: Solve for x
    x = 34,960,649,937.96/213,915.94
  6. Step 6: Final answer
    x = 163,431.72

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