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Finding the Fourth Proportional to 386,677.46, 580,080.43 and 162,054.79

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Solution

The fourth proportional to 386,677.46, 580,080.43 and 162,054.79 is: 243,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,677.46 : 580,080.43 = 162,054.79 : x
  2. Step 2: Convert to fraction form
    386,677.46/580,080.43 = 162,054.79/x
  3. Step 3: Cross multiply
    386,677.46x = 580,080.43 × 162,054.79
  4. Step 4: Simplify right side
    386,677.46x = 94,004,811,019.13
  5. Step 5: Solve for x
    x = 94,004,811,019.13/386,677.46
  6. Step 6: Final answer
    x = 243,109.10

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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.