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Finding the Fourth Proportional to 543,868.40, 814,927.80 and 343,830.80

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Solution

The fourth proportional to 543,868.40, 814,927.80 and 343,830.80 is: 515,193.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,868.40 : 814,927.80 = 343,830.80 : x
  2. Step 2: Convert to fraction form
    543,868.40/814,927.80 = 343,830.80/x
  3. Step 3: Cross multiply
    543,868.40x = 814,927.80 × 343,830.80
  4. Step 4: Simplify right side
    543,868.40x = 280,197,277,416.24
  5. Step 5: Solve for x
    x = 280,197,277,416.24/543,868.40
  6. Step 6: Final answer
    x = 515,193.16

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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.