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Finding the Fourth Proportional to 567,874.90, 851,812.35 and 505,666.90

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Solution

The fourth proportional to 567,874.90, 851,812.35 and 505,666.90 is: 758,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,874.90 : 851,812.35 = 505,666.90 : x
  2. Step 2: Convert to fraction form
    567,874.90/851,812.35 = 505,666.90/x
  3. Step 3: Cross multiply
    567,874.90x = 851,812.35 × 505,666.90
  4. Step 4: Simplify right side
    567,874.90x = 430,733,310,406.22
  5. Step 5: Solve for x
    x = 430,733,310,406.22/567,874.90
  6. Step 6: Final answer
    x = 758,500.35

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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.