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Finding the Fourth Proportional to 412,661.58, 618,869.01 and 124,461.15

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Solution

The fourth proportional to 412,661.58, 618,869.01 and 124,461.15 is: 186,654.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,661.58 : 618,869.01 = 124,461.15 : x
  2. Step 2: Convert to fraction form
    412,661.58/618,869.01 = 124,461.15/x
  3. Step 3: Cross multiply
    412,661.58x = 618,869.01 × 124,461.15
  4. Step 4: Simplify right side
    412,661.58x = 77,025,148,683.96
  5. Step 5: Solve for x
    x = 77,025,148,683.96/412,661.58
  6. Step 6: Final answer
    x = 186,654.52

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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.