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Finding the Fourth Proportional to 366,921.90, 514,390.50 and 366,921.90

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Solution

The fourth proportional to 366,921.90, 514,390.50 and 366,921.90 is: 514,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,921.90 : 514,390.50 = 366,921.90 : x
  2. Step 2: Convert to fraction form
    366,921.90/514,390.50 = 366,921.90/x
  3. Step 3: Cross multiply
    366,921.90x = 514,390.50 × 366,921.90
  4. Step 4: Simplify right side
    366,921.90x = 188,741,139,601.95
  5. Step 5: Solve for x
    x = 188,741,139,601.95/366,921.90
  6. Step 6: Final answer
    x = 514,390.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.