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Finding the Fourth Proportional to 519,639.74, 716,945.93 and 301,806.34

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Solution

The fourth proportional to 519,639.74, 716,945.93 and 301,806.34 is: 416,401.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,639.74 : 716,945.93 = 301,806.34 : x
  2. Step 2: Convert to fraction form
    519,639.74/716,945.93 = 301,806.34/x
  3. Step 3: Cross multiply
    519,639.74x = 716,945.93 × 301,806.34
  4. Step 4: Simplify right side
    519,639.74x = 216,378,827,753.98
  5. Step 5: Solve for x
    x = 216,378,827,753.98/519,639.74
  6. Step 6: Final answer
    x = 416,401.61

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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.