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Finding the Fourth Proportional to 445,553.70, 668,063.64 and 141,816.65

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Solution

The fourth proportional to 445,553.70, 668,063.64 and 141,816.65 is: 212,640.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,553.70 : 668,063.64 = 141,816.65 : x
  2. Step 2: Convert to fraction form
    445,553.70/668,063.64 = 141,816.65/x
  3. Step 3: Cross multiply
    445,553.70x = 668,063.64 × 141,816.65
  4. Step 4: Simplify right side
    445,553.70x = 94,742,544,071.29
  5. Step 5: Solve for x
    x = 94,742,544,071.29/445,553.70
  6. Step 6: Final answer
    x = 212,640.01

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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.