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Finding the Fourth Proportional to 535,840.40, 804,682.20 and 379,168.40

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Solution

The fourth proportional to 535,840.40, 804,682.20 and 379,168.40 is: 569,404.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,840.40 : 804,682.20 = 379,168.40 : x
  2. Step 2: Convert to fraction form
    535,840.40/804,682.20 = 379,168.40/x
  3. Step 3: Cross multiply
    535,840.40x = 804,682.20 × 379,168.40
  4. Step 4: Simplify right side
    535,840.40x = 305,110,062,282.48
  5. Step 5: Solve for x
    x = 305,110,062,282.48/535,840.40
  6. Step 6: Final answer
    x = 569,404.74

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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.