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Finding the Fourth Proportional to 92,348.94, 138,129.75 and 56,722.71

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Solution

The fourth proportional to 92,348.94, 138,129.75 and 56,722.71 is: 84,842.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,348.94 : 138,129.75 = 56,722.71 : x
  2. Step 2: Convert to fraction form
    92,348.94/138,129.75 = 56,722.71/x
  3. Step 3: Cross multiply
    92,348.94x = 138,129.75 × 56,722.71
  4. Step 4: Simplify right side
    92,348.94x = 7,835,093,751.62
  5. Step 5: Solve for x
    x = 7,835,093,751.62/92,348.94
  6. Step 6: Final answer
    x = 84,842.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.