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Finding the Fourth Proportional to 542,003.40, 812,130.30 and 341,965.80

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Solution

The fourth proportional to 542,003.40, 812,130.30 and 341,965.80 is: 512,396.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,003.40 : 812,130.30 = 341,965.80 : x
  2. Step 2: Convert to fraction form
    542,003.40/812,130.30 = 341,965.80/x
  3. Step 3: Cross multiply
    542,003.40x = 812,130.30 × 341,965.80
  4. Step 4: Simplify right side
    542,003.40x = 277,720,787,743.74
  5. Step 5: Solve for x
    x = 277,720,787,743.74/542,003.40
  6. Step 6: Final answer
    x = 512,396.76

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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.