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Finding the Fourth Proportional to 511,881.40, 767,814.90 and 231,398.20

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Solution

The fourth proportional to 511,881.40, 767,814.90 and 231,398.20 is: 347,094.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,881.40 : 767,814.90 = 231,398.20 : x
  2. Step 2: Convert to fraction form
    511,881.40/767,814.90 = 231,398.20/x
  3. Step 3: Cross multiply
    511,881.40x = 767,814.90 × 231,398.20
  4. Step 4: Simplify right side
    511,881.40x = 177,670,985,793.18
  5. Step 5: Solve for x
    x = 177,670,985,793.18/511,881.40
  6. Step 6: Final answer
    x = 347,094.05

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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.