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Finding the Fourth Proportional to 605,873.70, 908,810.55 and 416,916.90

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Solution

The fourth proportional to 605,873.70, 908,810.55 and 416,916.90 is: 625,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,873.70 : 908,810.55 = 416,916.90 : x
  2. Step 2: Convert to fraction form
    605,873.70/908,810.55 = 416,916.90/x
  3. Step 3: Cross multiply
    605,873.70x = 908,810.55 × 416,916.90
  4. Step 4: Simplify right side
    605,873.70x = 378,898,477,193.30
  5. Step 5: Solve for x
    x = 378,898,477,193.30/605,873.70
  6. Step 6: Final answer
    x = 625,375.35

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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.