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Finding the Fourth Proportional to 1,174,957, 1,621,450.56 and 638,413

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Solution

The fourth proportional to 1,174,957, 1,621,450.56 and 638,413 is: 881,015.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,957 : 1,621,450.56 = 638,413 : x
  2. Step 2: Convert to fraction form
    1,174,957/1,621,450.56 = 638,413/x
  3. Step 3: Cross multiply
    1,174,957x = 1,621,450.56 × 638,413
  4. Step 4: Simplify right side
    1,174,957x = 1,035,155,116,361.28
  5. Step 5: Solve for x
    x = 1,035,155,116,361.28/1,174,957
  6. Step 6: Final answer
    x = 881,015.32

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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.