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Finding the Fourth Proportional to 571,615.43, 788,772.45 and 329,975.85

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Solution

The fourth proportional to 571,615.43, 788,772.45 and 329,975.85 is: 455,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,615.43 : 788,772.45 = 329,975.85 : x
  2. Step 2: Convert to fraction form
    571,615.43/788,772.45 = 329,975.85/x
  3. Step 3: Cross multiply
    571,615.43x = 788,772.45 × 329,975.85
  4. Step 4: Simplify right side
    571,615.43x = 260,275,863,840.64
  5. Step 5: Solve for x
    x = 260,275,863,840.64/571,615.43
  6. Step 6: Final answer
    x = 455,333.87

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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.