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Finding the Fourth Proportional to 614,359.07, 921,537.78 and 285,691.23

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Solution

The fourth proportional to 614,359.07, 921,537.78 and 285,691.23 is: 428,536.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,359.07 : 921,537.78 = 285,691.23 : x
  2. Step 2: Convert to fraction form
    614,359.07/921,537.78 = 285,691.23/x
  3. Step 3: Cross multiply
    614,359.07x = 921,537.78 × 285,691.23
  4. Step 4: Simplify right side
    614,359.07x = 263,275,261,859.67
  5. Step 5: Solve for x
    x = 263,275,261,859.67/614,359.07
  6. Step 6: Final answer
    x = 428,536.46

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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.