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Finding the Fourth Proportional to 113,596.27, 156,762.34 and 61,913.28

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Solution

The fourth proportional to 113,596.27, 156,762.34 and 61,913.28 is: 85,440.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,596.27 : 156,762.34 = 61,913.28 : x
  2. Step 2: Convert to fraction form
    113,596.27/156,762.34 = 61,913.28/x
  3. Step 3: Cross multiply
    113,596.27x = 156,762.34 × 61,913.28
  4. Step 4: Simplify right side
    113,596.27x = 9,705,670,201.16
  5. Step 5: Solve for x
    x = 9,705,670,201.16/113,596.27
  6. Step 6: Final answer
    x = 85,440.04

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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.