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Finding the Fourth Proportional to 647,216.32, 965,761.04 and 579,971.68

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Solution

The fourth proportional to 647,216.32, 965,761.04 and 579,971.68 is: 865,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,216.32 : 965,761.04 = 579,971.68 : x
  2. Step 2: Convert to fraction form
    647,216.32/965,761.04 = 579,971.68/x
  3. Step 3: Cross multiply
    647,216.32x = 965,761.04 × 579,971.68
  4. Step 4: Simplify right side
    647,216.32x = 560,114,052,847.35
  5. Step 5: Solve for x
    x = 560,114,052,847.35/647,216.32
  6. Step 6: Final answer
    x = 865,420.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.