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Finding the Fourth Proportional to 328,410.45, 492,559.38 and 91,698.48

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Solution

The fourth proportional to 328,410.45, 492,559.38 and 91,698.48 is: 137,532.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,410.45 : 492,559.38 = 91,698.48 : x
  2. Step 2: Convert to fraction form
    328,410.45/492,559.38 = 91,698.48/x
  3. Step 3: Cross multiply
    328,410.45x = 492,559.38 × 91,698.48
  4. Step 4: Simplify right side
    328,410.45x = 45,166,946,455.74
  5. Step 5: Solve for x
    x = 45,166,946,455.74/328,410.45
  6. Step 6: Final answer
    x = 137,532.00

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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.