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Finding the Fourth Proportional to 655,983.72, 905,303.82 and 365,613.72

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Solution

The fourth proportional to 655,983.72, 905,303.82 and 365,613.72 is: 504,572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,983.72 : 905,303.82 = 365,613.72 : x
  2. Step 2: Convert to fraction form
    655,983.72/905,303.82 = 365,613.72/x
  3. Step 3: Cross multiply
    655,983.72x = 905,303.82 × 365,613.72
  4. Step 4: Simplify right side
    655,983.72x = 330,991,497,360.41
  5. Step 5: Solve for x
    x = 330,991,497,360.41/655,983.72
  6. Step 6: Final answer
    x = 504,572.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.