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Finding the Fourth Proportional to 191,920.90, 264,959.05 and 133,090.60

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Solution

The fourth proportional to 191,920.90, 264,959.05 and 133,090.60 is: 183,740.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,920.90 : 264,959.05 = 133,090.60 : x
  2. Step 2: Convert to fraction form
    191,920.90/264,959.05 = 133,090.60/x
  3. Step 3: Cross multiply
    191,920.90x = 264,959.05 × 133,090.60
  4. Step 4: Simplify right side
    191,920.90x = 35,263,558,939.93
  5. Step 5: Solve for x
    x = 35,263,558,939.93/191,920.90
  6. Step 6: Final answer
    x = 183,740.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.