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Finding the Fourth Proportional to 384,730.80, 577,096.20 and 243,013.20

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Solution

The fourth proportional to 384,730.80, 577,096.20 and 243,013.20 is: 364,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,730.80 : 577,096.20 = 243,013.20 : x
  2. Step 2: Convert to fraction form
    384,730.80/577,096.20 = 243,013.20/x
  3. Step 3: Cross multiply
    384,730.80x = 577,096.20 × 243,013.20
  4. Step 4: Simplify right side
    384,730.80x = 140,241,994,269.84
  5. Step 5: Solve for x
    x = 140,241,994,269.84/384,730.80
  6. Step 6: Final answer
    x = 364,519.80

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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.