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Finding the Fourth Proportional to 365,915.50, 548,306.43 and 253,813.66

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Solution

The fourth proportional to 365,915.50, 548,306.43 and 253,813.66 is: 380,327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,915.50 : 548,306.43 = 253,813.66 : x
  2. Step 2: Convert to fraction form
    365,915.50/548,306.43 = 253,813.66/x
  3. Step 3: Cross multiply
    365,915.50x = 548,306.43 × 253,813.66
  4. Step 4: Simplify right side
    365,915.50x = 139,167,661,799.83
  5. Step 5: Solve for x
    x = 139,167,661,799.83/365,915.50
  6. Step 6: Final answer
    x = 380,327.32

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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.