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Finding the Fourth Proportional to 618,438.92, 927,852.10 and 186,173.51

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Solution

The fourth proportional to 618,438.92, 927,852.10 and 186,173.51 is: 279,318.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,438.92 : 927,852.10 = 186,173.51 : x
  2. Step 2: Convert to fraction form
    618,438.92/927,852.10 = 186,173.51/x
  3. Step 3: Cross multiply
    618,438.92x = 927,852.10 × 186,173.51
  4. Step 4: Simplify right side
    618,438.92x = 172,741,477,113.18
  5. Step 5: Solve for x
    x = 172,741,477,113.18/618,438.92
  6. Step 6: Final answer
    x = 279,318.58

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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.