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Finding the Fourth Proportional to 445,554.70, 668,065.14 and 141,817.65

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Solution

The fourth proportional to 445,554.70, 668,065.14 and 141,817.65 is: 212,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,554.70 : 668,065.14 = 141,817.65 : x
  2. Step 2: Convert to fraction form
    445,554.70/668,065.14 = 141,817.65/x
  3. Step 3: Cross multiply
    445,554.70x = 668,065.14 × 141,817.65
  4. Step 4: Simplify right side
    445,554.70x = 94,743,428,201.72
  5. Step 5: Solve for x
    x = 94,743,428,201.72/445,554.70
  6. Step 6: Final answer
    x = 212,641.52

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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.