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Finding the Fourth Proportional to 113,392.85, 156,473.03 and 65,649.27

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Solution

The fourth proportional to 113,392.85, 156,473.03 and 65,649.27 is: 90,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,392.85 : 156,473.03 = 65,649.27 : x
  2. Step 2: Convert to fraction form
    113,392.85/156,473.03 = 65,649.27/x
  3. Step 3: Cross multiply
    113,392.85x = 156,473.03 × 65,649.27
  4. Step 4: Simplify right side
    113,392.85x = 10,272,340,194.19
  5. Step 5: Solve for x
    x = 10,272,340,194.19/113,392.85
  6. Step 6: Final answer
    x = 90,590.72

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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.