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Finding the Fourth Proportional to 544,871.70, 751,911.22 and 315,438.69

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Solution

The fourth proportional to 544,871.70, 751,911.22 and 315,438.69 is: 435,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,871.70 : 751,911.22 = 315,438.69 : x
  2. Step 2: Convert to fraction form
    544,871.70/751,911.22 = 315,438.69/x
  3. Step 3: Cross multiply
    544,871.70x = 751,911.22 × 315,438.69
  4. Step 4: Simplify right side
    544,871.70x = 237,181,890,233.10
  5. Step 5: Solve for x
    x = 237,181,890,233.10/544,871.70
  6. Step 6: Final answer
    x = 435,298.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.