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Finding the Fourth Proportional to 83,339.70, 114,980.19 and 47,503.86

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Solution

The fourth proportional to 83,339.70, 114,980.19 and 47,503.86 is: 65,539.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,339.70 : 114,980.19 = 47,503.86 : x
  2. Step 2: Convert to fraction form
    83,339.70/114,980.19 = 47,503.86/x
  3. Step 3: Cross multiply
    83,339.70x = 114,980.19 × 47,503.86
  4. Step 4: Simplify right side
    83,339.70x = 5,462,002,848.53
  5. Step 5: Solve for x
    x = 5,462,002,848.53/83,339.70
  6. Step 6: Final answer
    x = 65,539.03

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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.