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Finding the Fourth Proportional to 58,428.40, 87,815.40 and 50,825.20

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Solution

The fourth proportional to 58,428.40, 87,815.40 and 50,825.20 is: 76,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,428.40 : 87,815.40 = 50,825.20 : x
  2. Step 2: Convert to fraction form
    58,428.40/87,815.40 = 50,825.20/x
  3. Step 3: Cross multiply
    58,428.40x = 87,815.40 × 50,825.20
  4. Step 4: Simplify right side
    58,428.40x = 4,463,235,268.08
  5. Step 5: Solve for x
    x = 4,463,235,268.08/58,428.40
  6. Step 6: Final answer
    x = 76,388.11

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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.