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Finding the Fourth Proportional to 116,543.80, 174,945.30 and 72,220.60

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Solution

The fourth proportional to 116,543.80, 174,945.30 and 72,220.60 is: 108,411.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,543.80 : 174,945.30 = 72,220.60 : x
  2. Step 2: Convert to fraction form
    116,543.80/174,945.30 = 72,220.60/x
  3. Step 3: Cross multiply
    116,543.80x = 174,945.30 × 72,220.60
  4. Step 4: Simplify right side
    116,543.80x = 12,634,654,533.18
  5. Step 5: Solve for x
    x = 12,634,654,533.18/116,543.80
  6. Step 6: Final answer
    x = 108,411.21

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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.