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Finding the Fourth Proportional to 113,686.80, 156,887.46 and 65,968.08

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Solution

The fourth proportional to 113,686.80, 156,887.46 and 65,968.08 is: 91,035.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,686.80 : 156,887.46 = 65,968.08 : x
  2. Step 2: Convert to fraction form
    113,686.80/156,887.46 = 65,968.08/x
  3. Step 3: Cross multiply
    113,686.80x = 156,887.46 × 65,968.08
  4. Step 4: Simplify right side
    113,686.80x = 10,349,564,512.28
  5. Step 5: Solve for x
    x = 10,349,564,512.28/113,686.80
  6. Step 6: Final answer
    x = 91,035.76

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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.