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Finding the Fourth Proportional to 46,872, 64,673.04 and 28,726.56

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Solution

The fourth proportional to 46,872, 64,673.04 and 28,726.56 is: 39,636.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,872 : 64,673.04 = 28,726.56 : x
  2. Step 2: Convert to fraction form
    46,872/64,673.04 = 28,726.56/x
  3. Step 3: Cross multiply
    46,872x = 64,673.04 × 28,726.56
  4. Step 4: Simplify right side
    46,872x = 1,857,833,963.94
  5. Step 5: Solve for x
    x = 1,857,833,963.94/46,872
  6. Step 6: Final answer
    x = 39,636.33

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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.