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Finding the Fourth Proportional to 191,739.65, 264,601.55 and 105,696.79

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Solution

The fourth proportional to 191,739.65, 264,601.55 and 105,696.79 is: 145,862.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,739.65 : 264,601.55 = 105,696.79 : x
  2. Step 2: Convert to fraction form
    191,739.65/264,601.55 = 105,696.79/x
  3. Step 3: Cross multiply
    191,739.65x = 264,601.55 × 105,696.79
  4. Step 4: Simplify right side
    191,739.65x = 27,967,534,066.76
  5. Step 5: Solve for x
    x = 27,967,534,066.76/191,739.65
  6. Step 6: Final answer
    x = 145,862.03

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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.