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Finding the Fourth Proportional to 364,561.12, 546,838.40 and 115,243.20

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Solution

The fourth proportional to 364,561.12, 546,838.40 and 115,243.20 is: 172,863.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,561.12 : 546,838.40 = 115,243.20 : x
  2. Step 2: Convert to fraction form
    364,561.12/546,838.40 = 115,243.20/x
  3. Step 3: Cross multiply
    364,561.12x = 546,838.40 × 115,243.20
  4. Step 4: Simplify right side
    364,561.12x = 63,019,407,098.88
  5. Step 5: Solve for x
    x = 63,019,407,098.88/364,561.12
  6. Step 6: Final answer
    x = 172,863.76

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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.