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Finding the Fourth Proportional to 373,394.84, 515,315.70 and 212,300.60

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Solution

The fourth proportional to 373,394.84, 515,315.70 and 212,300.60 is: 292,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,394.84 : 515,315.70 = 212,300.60 : x
  2. Step 2: Convert to fraction form
    373,394.84/515,315.70 = 212,300.60/x
  3. Step 3: Cross multiply
    373,394.84x = 515,315.70 × 212,300.60
  4. Step 4: Simplify right side
    373,394.84x = 109,401,832,299.42
  5. Step 5: Solve for x
    x = 109,401,832,299.42/373,394.84
  6. Step 6: Final answer
    x = 292,992.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.