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Finding the Fourth Proportional to 273,215.40, 409,823.10 and 183,985.80

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Solution

The fourth proportional to 273,215.40, 409,823.10 and 183,985.80 is: 275,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,215.40 : 409,823.10 = 183,985.80 : x
  2. Step 2: Convert to fraction form
    273,215.40/409,823.10 = 183,985.80/x
  3. Step 3: Cross multiply
    273,215.40x = 409,823.10 × 183,985.80
  4. Step 4: Simplify right side
    273,215.40x = 75,401,630,911.98
  5. Step 5: Solve for x
    x = 75,401,630,911.98/273,215.40
  6. Step 6: Final answer
    x = 275,978.70

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1.5x scale

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.