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Finding the Fourth Proportional to 683,935.49, 943,879.85 and 378,005.29

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Solution

The fourth proportional to 683,935.49, 943,879.85 and 378,005.29 is: 521,674.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,935.49 : 943,879.85 = 378,005.29 : x
  2. Step 2: Convert to fraction form
    683,935.49/943,879.85 = 378,005.29/x
  3. Step 3: Cross multiply
    683,935.49x = 943,879.85 × 378,005.29
  4. Step 4: Simplify right side
    683,935.49x = 356,791,574,534.38
  5. Step 5: Solve for x
    x = 356,791,574,534.38/683,935.49
  6. Step 6: Final answer
    x = 521,674.31

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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.