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Finding the Fourth Proportional to 1,795,849.75, 2,478,325.16 and 980,105.81

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Solution

The fourth proportional to 1,795,849.75, 2,478,325.16 and 980,105.81 is: 1,352,574.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,795,849.75 : 2,478,325.16 = 980,105.81 : x
  2. Step 2: Convert to fraction form
    1,795,849.75/2,478,325.16 = 980,105.81/x
  3. Step 3: Cross multiply
    1,795,849.75x = 2,478,325.16 × 980,105.81
  4. Step 4: Simplify right side
    1,795,849.75x = 2,429,020,898,921.57
  5. Step 5: Solve for x
    x = 2,429,020,898,921.57/1,795,849.75
  6. Step 6: Final answer
    x = 1,352,574.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.