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Finding the Fourth Proportional to 555,411.65, 832,945.19 and 200,379.51

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Solution

The fourth proportional to 555,411.65, 832,945.19 and 200,379.51 is: 300,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,411.65 : 832,945.19 = 200,379.51 : x
  2. Step 2: Convert to fraction form
    555,411.65/832,945.19 = 200,379.51/x
  3. Step 3: Cross multiply
    555,411.65x = 832,945.19 × 200,379.51
  4. Step 4: Simplify right side
    555,411.65x = 166,905,148,027.16
  5. Step 5: Solve for x
    x = 166,905,148,027.16/555,411.65
  6. Step 6: Final answer
    x = 300,507.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.