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Finding the Fourth Proportional to 116,656.80, 174,985.20 and 80,887.20

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Solution

The fourth proportional to 116,656.80, 174,985.20 and 80,887.20 is: 121,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,656.80 : 174,985.20 = 80,887.20 : x
  2. Step 2: Convert to fraction form
    116,656.80/174,985.20 = 80,887.20/x
  3. Step 3: Cross multiply
    116,656.80x = 174,985.20 × 80,887.20
  4. Step 4: Simplify right side
    116,656.80x = 14,154,062,869.44
  5. Step 5: Solve for x
    x = 14,154,062,869.44/116,656.80
  6. Step 6: Final answer
    x = 121,330.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.