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Finding the Fourth Proportional to 56,992.35, 78,649.17 and 31,500.51

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Solution

The fourth proportional to 56,992.35, 78,649.17 and 31,500.51 is: 43,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,992.35 : 78,649.17 = 31,500.51 : x
  2. Step 2: Convert to fraction form
    56,992.35/78,649.17 = 31,500.51/x
  3. Step 3: Cross multiply
    56,992.35x = 78,649.17 × 31,500.51
  4. Step 4: Simplify right side
    56,992.35x = 2,477,488,966.08
  5. Step 5: Solve for x
    x = 2,477,488,966.08/56,992.35
  6. Step 6: Final answer
    x = 43,470.55

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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.