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Finding the Fourth Proportional to 341,963.94, 512,921.61 and 105,281.94

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Solution

The fourth proportional to 341,963.94, 512,921.61 and 105,281.94 is: 157,915.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,963.94 : 512,921.61 = 105,281.94 : x
  2. Step 2: Convert to fraction form
    341,963.94/512,921.61 = 105,281.94/x
  3. Step 3: Cross multiply
    341,963.94x = 512,921.61 × 105,281.94
  4. Step 4: Simplify right side
    341,963.94x = 54,001,382,168.72
  5. Step 5: Solve for x
    x = 54,001,382,168.72/341,963.94
  6. Step 6: Final answer
    x = 157,915.43

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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.