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Finding the Fourth Proportional to 407,866.99, 562,923.86 and 339,776.11

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Solution

The fourth proportional to 407,866.99, 562,923.86 and 339,776.11 is: 468,947.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,866.99 : 562,923.86 = 339,776.11 : x
  2. Step 2: Convert to fraction form
    407,866.99/562,923.86 = 339,776.11/x
  3. Step 3: Cross multiply
    407,866.99x = 562,923.86 × 339,776.11
  4. Step 4: Simplify right side
    407,866.99x = 191,268,079,376.99
  5. Step 5: Solve for x
    x = 191,268,079,376.99/407,866.99
  6. Step 6: Final answer
    x = 468,947.19

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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.