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Finding the Fourth Proportional to 463,336.32, 639,417.60 and 262,128

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Solution

The fourth proportional to 463,336.32, 639,417.60 and 262,128 is: 361,744.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,336.32 : 639,417.60 = 262,128 : x
  2. Step 2: Convert to fraction form
    463,336.32/639,417.60 = 262,128/x
  3. Step 3: Cross multiply
    463,336.32x = 639,417.60 × 262,128
  4. Step 4: Simplify right side
    463,336.32x = 167,609,256,652.80
  5. Step 5: Solve for x
    x = 167,609,256,652.80/463,336.32
  6. Step 6: Final answer
    x = 361,744.27

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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.