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Finding the Fourth Proportional to 533,999.80, 800,999.70 and 515,337.40

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Solution

The fourth proportional to 533,999.80, 800,999.70 and 515,337.40 is: 773,006.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,999.80 : 800,999.70 = 515,337.40 : x
  2. Step 2: Convert to fraction form
    533,999.80/800,999.70 = 515,337.40/x
  3. Step 3: Cross multiply
    533,999.80x = 800,999.70 × 515,337.40
  4. Step 4: Simplify right side
    533,999.80x = 412,785,102,798.78
  5. Step 5: Solve for x
    x = 412,785,102,798.78/533,999.80
  6. Step 6: Final answer
    x = 773,006.10

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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.