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Finding the Fourth Proportional to 419,368.68, 628,106.67 and 194,256.18

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Solution

The fourth proportional to 419,368.68, 628,106.67 and 194,256.18 is: 290,945.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,368.68 : 628,106.67 = 194,256.18 : x
  2. Step 2: Convert to fraction form
    419,368.68/628,106.67 = 194,256.18/x
  3. Step 3: Cross multiply
    419,368.68x = 628,106.67 × 194,256.18
  4. Step 4: Simplify right side
    419,368.68x = 122,013,602,346.72
  5. Step 5: Solve for x
    x = 122,013,602,346.72/419,368.68
  6. Step 6: Final answer
    x = 290,945.91

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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.