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Finding the Fourth Proportional to 618,146.19, 927,221.76 and 218,787.03

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Solution

The fourth proportional to 618,146.19, 927,221.76 and 218,787.03 is: 328,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,146.19 : 927,221.76 = 218,787.03 : x
  2. Step 2: Convert to fraction form
    618,146.19/927,221.76 = 218,787.03/x
  3. Step 3: Cross multiply
    618,146.19x = 927,221.76 × 218,787.03
  4. Step 4: Simplify right side
    618,146.19x = 202,864,095,021.77
  5. Step 5: Solve for x
    x = 202,864,095,021.77/618,146.19
  6. Step 6: Final answer
    x = 328,181.42

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1.5x scale

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.