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Finding the Fourth Proportional to 273,271.20, 409,688.10 and 115,369.80

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Solution

The fourth proportional to 273,271.20, 409,688.10 and 115,369.80 is: 172,962.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,271.20 : 409,688.10 = 115,369.80 : x
  2. Step 2: Convert to fraction form
    273,271.20/409,688.10 = 115,369.80/x
  3. Step 3: Cross multiply
    273,271.20x = 409,688.10 × 115,369.80
  4. Step 4: Simplify right side
    273,271.20x = 47,265,634,159.38
  5. Step 5: Solve for x
    x = 47,265,634,159.38/273,271.20
  6. Step 6: Final answer
    x = 172,962.37

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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.