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Finding the Fourth Proportional to 116,656.80, 174,985.20 and 72,333.60

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Solution

The fourth proportional to 116,656.80, 174,985.20 and 72,333.60 is: 108,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,656.80 : 174,985.20 = 72,333.60 : x
  2. Step 2: Convert to fraction form
    116,656.80/174,985.20 = 72,333.60/x
  3. Step 3: Cross multiply
    116,656.80x = 174,985.20 × 72,333.60
  4. Step 4: Simplify right side
    116,656.80x = 12,657,309,462.72
  5. Step 5: Solve for x
    x = 12,657,309,462.72/116,656.80
  6. Step 6: Final answer
    x = 108,500.40

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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.