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Finding the Fourth Proportional to 511,575.40, 767,361.90 and 137,598.76

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Solution

The fourth proportional to 511,575.40, 767,361.90 and 137,598.76 is: 206,397.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,575.40 : 767,361.90 = 137,598.76 : x
  2. Step 2: Convert to fraction form
    511,575.40/767,361.90 = 137,598.76/x
  3. Step 3: Cross multiply
    511,575.40x = 767,361.90 × 137,598.76
  4. Step 4: Simplify right side
    511,575.40x = 105,588,045,911.24
  5. Step 5: Solve for x
    x = 105,588,045,911.24/511,575.40
  6. Step 6: Final answer
    x = 206,397.82

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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.