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Finding the Fourth Proportional to 386,995.86, 580,717.98 and 162,336.24

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Solution

The fourth proportional to 386,995.86, 580,717.98 and 162,336.24 is: 243,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,995.86 : 580,717.98 = 162,336.24 : x
  2. Step 2: Convert to fraction form
    386,995.86/580,717.98 = 162,336.24/x
  3. Step 3: Cross multiply
    386,995.86x = 580,717.98 × 162,336.24
  4. Step 4: Simplify right side
    386,995.86x = 94,271,573,373.60
  5. Step 5: Solve for x
    x = 94,271,573,373.60/386,995.86
  6. Step 6: Final answer
    x = 243,598.40

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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.