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Finding the Fourth Proportional to 341,781.40, 512,696.40 and 105,123.70

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Solution

The fourth proportional to 341,781.40, 512,696.40 and 105,123.70 is: 157,693.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,781.40 : 512,696.40 = 105,123.70 : x
  2. Step 2: Convert to fraction form
    341,781.40/512,696.40 = 105,123.70/x
  3. Step 3: Cross multiply
    341,781.40x = 512,696.40 × 105,123.70
  4. Step 4: Simplify right side
    341,781.40x = 53,896,542,544.68
  5. Step 5: Solve for x
    x = 53,896,542,544.68/341,781.40
  6. Step 6: Final answer
    x = 157,693.02

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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.