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Finding the Fourth Proportional to 1,474,696, 2,035,047 and 821,317.60

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Solution

The fourth proportional to 1,474,696, 2,035,047 and 821,317.60 is: 1,133,399.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474,696 : 2,035,047 = 821,317.60 : x
  2. Step 2: Convert to fraction form
    1,474,696/2,035,047 = 821,317.60/x
  3. Step 3: Cross multiply
    1,474,696x = 2,035,047 × 821,317.60
  4. Step 4: Simplify right side
    1,474,696x = 1,671,419,917,927.20
  5. Step 5: Solve for x
    x = 1,671,419,917,927.20/1,474,696
  6. Step 6: Final answer
    x = 1,133,399.64

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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.