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Finding the Fourth Proportional to 191,300.40, 286,270.20 and 166,611.60

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Solution

The fourth proportional to 191,300.40, 286,270.20 and 166,611.60 is: 249,324.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,300.40 : 286,270.20 = 166,611.60 : x
  2. Step 2: Convert to fraction form
    191,300.40/286,270.20 = 166,611.60/x
  3. Step 3: Cross multiply
    191,300.40x = 286,270.20 × 166,611.60
  4. Step 4: Simplify right side
    191,300.40x = 47,695,936,054.32
  5. Step 5: Solve for x
    x = 47,695,936,054.32/191,300.40
  6. Step 6: Final answer
    x = 249,324.81

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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.