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Finding the Fourth Proportional to 306,043.80, 458,028.90 and 306,043.80

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Solution

The fourth proportional to 306,043.80, 458,028.90 and 306,043.80 is: 458,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,043.80 : 458,028.90 = 306,043.80 : x
  2. Step 2: Convert to fraction form
    306,043.80/458,028.90 = 306,043.80/x
  3. Step 3: Cross multiply
    306,043.80x = 458,028.90 × 306,043.80
  4. Step 4: Simplify right side
    306,043.80x = 140,176,905,065.82
  5. Step 5: Solve for x
    x = 140,176,905,065.82/306,043.80
  6. Step 6: Final answer
    x = 458,028.90

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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.