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Finding the Fourth Proportional to 620,817.75, 930,447.54 and 265,414.05

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Solution

The fourth proportional to 620,817.75, 930,447.54 and 265,414.05 is: 397,788.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,817.75 : 930,447.54 = 265,414.05 : x
  2. Step 2: Convert to fraction form
    620,817.75/930,447.54 = 265,414.05/x
  3. Step 3: Cross multiply
    620,817.75x = 930,447.54 × 265,414.05
  4. Step 4: Simplify right side
    620,817.75x = 246,953,849,903.94
  5. Step 5: Solve for x
    x = 246,953,849,903.94/620,817.75
  6. Step 6: Final answer
    x = 397,788.00

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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.