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Finding the Third Proportional to 188,526 and 390,174

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Solution

The third proportional to 188,526 and 390,174 is: 807,505.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,526 : 390,174 = 390,174 : x
  2. Step 2: Convert to fraction form
    188,526/390,174 = 390,174/x
  3. Step 3: Cross multiply
    188,526x = 390,174 × 390,174
  4. Step 4: Simplify right side
    188,526x = 152,235,750,276
  5. Step 5: Solve for x
    x = 152,235,750,276/188,526
  6. Step 6: Final answer
    x = 807,505.33

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.