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Finding the Fourth Proportional to 266,056.80, 399,085.20 and 250,310.40

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Solution

The fourth proportional to 266,056.80, 399,085.20 and 250,310.40 is: 375,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,056.80 : 399,085.20 = 250,310.40 : x
  2. Step 2: Convert to fraction form
    266,056.80/399,085.20 = 250,310.40/x
  3. Step 3: Cross multiply
    266,056.80x = 399,085.20 × 250,310.40
  4. Step 4: Simplify right side
    266,056.80x = 99,895,176,046.08
  5. Step 5: Solve for x
    x = 99,895,176,046.08/266,056.80
  6. Step 6: Final answer
    x = 375,465.60

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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.