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Finding the Fourth Proportional to 369,236.65, 553,859.39 and 102,980.97

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Solution

The fourth proportional to 369,236.65, 553,859.39 and 102,980.97 is: 154,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,236.65 : 553,859.39 = 102,980.97 : x
  2. Step 2: Convert to fraction form
    369,236.65/553,859.39 = 102,980.97/x
  3. Step 3: Cross multiply
    369,236.65x = 553,859.39 × 102,980.97
  4. Step 4: Simplify right side
    369,236.65x = 57,036,975,020.11
  5. Step 5: Solve for x
    x = 57,036,975,020.11/369,236.65
  6. Step 6: Final answer
    x = 154,472.68

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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.