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Finding the Fourth Proportional to 678,961.73, 936,952.11 and 368,856.29

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Solution

The fourth proportional to 678,961.73, 936,952.11 and 368,856.29 is: 509,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,961.73 : 936,952.11 = 368,856.29 : x
  2. Step 2: Convert to fraction form
    678,961.73/936,952.11 = 368,856.29/x
  3. Step 3: Cross multiply
    678,961.73x = 936,952.11 × 368,856.29
  4. Step 4: Simplify right side
    678,961.73x = 345,600,674,517.51
  5. Step 5: Solve for x
    x = 345,600,674,517.51/678,961.73
  6. Step 6: Final answer
    x = 509,013.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.