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Finding the Fourth Proportional to 321,134.79, 481,683.69 and 96,490.47

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Solution

The fourth proportional to 321,134.79, 481,683.69 and 96,490.47 is: 144,730.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,134.79 : 481,683.69 = 96,490.47 : x
  2. Step 2: Convert to fraction form
    321,134.79/481,683.69 = 96,490.47/x
  3. Step 3: Cross multiply
    321,134.79x = 481,683.69 × 96,490.47
  4. Step 4: Simplify right side
    321,134.79x = 46,477,885,639.43
  5. Step 5: Solve for x
    x = 46,477,885,639.43/321,134.79
  6. Step 6: Final answer
    x = 144,730.15

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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.