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Finding the Fourth Proportional to 116,656.80, 175,071.60 and 77,200.80

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Solution

The fourth proportional to 116,656.80, 175,071.60 and 77,200.80 is: 115,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,656.80 : 175,071.60 = 77,200.80 : x
  2. Step 2: Convert to fraction form
    116,656.80/175,071.60 = 77,200.80/x
  3. Step 3: Cross multiply
    116,656.80x = 175,071.60 × 77,200.80
  4. Step 4: Simplify right side
    116,656.80x = 13,515,667,577.28
  5. Step 5: Solve for x
    x = 13,515,667,577.28/116,656.80
  6. Step 6: Final answer
    x = 115,858.38

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1.5x scale

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.