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Finding the Fourth Proportional to 348,040.70, 522,061.05 and 208,072.70

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Solution

The fourth proportional to 348,040.70, 522,061.05 and 208,072.70 is: 312,109.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,040.70 : 522,061.05 = 208,072.70 : x
  2. Step 2: Convert to fraction form
    348,040.70/522,061.05 = 208,072.70/x
  3. Step 3: Cross multiply
    348,040.70x = 522,061.05 × 208,072.70
  4. Step 4: Simplify right side
    348,040.70x = 108,626,652,238.34
  5. Step 5: Solve for x
    x = 108,626,652,238.34/348,040.70
  6. Step 6: Final answer
    x = 312,109.05

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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.