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Finding the Fourth Proportional to 453,712.17, 680,516.40 and 121,314.09

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Solution

The fourth proportional to 453,712.17, 680,516.40 and 121,314.09 is: 181,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,712.17 : 680,516.40 = 121,314.09 : x
  2. Step 2: Convert to fraction form
    453,712.17/680,516.40 = 121,314.09/x
  3. Step 3: Cross multiply
    453,712.17x = 680,516.40 × 121,314.09
  4. Step 4: Simplify right side
    453,712.17x = 82,556,227,796.08
  5. Step 5: Solve for x
    x = 82,556,227,796.08/453,712.17
  6. Step 6: Final answer
    x = 181,957.27

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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.