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Finding the Fourth Proportional to 124,429.70, 186,526.31 and 79,324.45

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Solution

The fourth proportional to 124,429.70, 186,526.31 and 79,324.45 is: 118,911.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,429.70 : 186,526.31 = 79,324.45 : x
  2. Step 2: Convert to fraction form
    124,429.70/186,526.31 = 79,324.45/x
  3. Step 3: Cross multiply
    124,429.70x = 186,526.31 × 79,324.45
  4. Step 4: Simplify right side
    124,429.70x = 14,796,095,622.03
  5. Step 5: Solve for x
    x = 14,796,095,622.03/124,429.70
  6. Step 6: Final answer
    x = 118,911.29

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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.