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Finding the Fourth Proportional to 532,899.90, 799,349.85 and 427,923.90

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Solution

The fourth proportional to 532,899.90, 799,349.85 and 427,923.90 is: 641,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,899.90 : 799,349.85 = 427,923.90 : x
  2. Step 2: Convert to fraction form
    532,899.90/799,349.85 = 427,923.90/x
  3. Step 3: Cross multiply
    532,899.90x = 799,349.85 × 427,923.90
  4. Step 4: Simplify right side
    532,899.90x = 342,060,905,276.42
  5. Step 5: Solve for x
    x = 342,060,905,276.42/532,899.90
  6. Step 6: Final answer
    x = 641,885.85

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Double scale
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Similar ratio
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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.