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Finding the Fourth Proportional to 116,068.80, 160,114.08 and 87,725.28

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Solution

The fourth proportional to 116,068.80, 160,114.08 and 87,725.28 is: 121,014.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,068.80 : 160,114.08 = 87,725.28 : x
  2. Step 2: Convert to fraction form
    116,068.80/160,114.08 = 87,725.28/x
  3. Step 3: Cross multiply
    116,068.80x = 160,114.08 × 87,725.28
  4. Step 4: Simplify right side
    116,068.80x = 14,046,052,499.94
  5. Step 5: Solve for x
    x = 14,046,052,499.94/116,068.80
  6. Step 6: Final answer
    x = 121,014.89

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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.