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Finding the Fourth Proportional to 641,804.85, 885,663.32 and 351,411.14

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Solution

The fourth proportional to 641,804.85, 885,663.32 and 351,411.14 is: 484,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,804.85 : 885,663.32 = 351,411.14 : x
  2. Step 2: Convert to fraction form
    641,804.85/885,663.32 = 351,411.14/x
  3. Step 3: Cross multiply
    641,804.85x = 885,663.32 × 351,411.14
  4. Step 4: Simplify right side
    641,804.85x = 311,231,950,752.01
  5. Step 5: Solve for x
    x = 311,231,950,752.01/641,804.85
  6. Step 6: Final answer
    x = 484,932.38

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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.