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Finding the Fourth Proportional to 705,581.77, 973,729.62 and 395,489.98

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Solution

The fourth proportional to 705,581.77, 973,729.62 and 395,489.98 is: 545,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,581.77 : 973,729.62 = 395,489.98 : x
  2. Step 2: Convert to fraction form
    705,581.77/973,729.62 = 395,489.98/x
  3. Step 3: Cross multiply
    705,581.77x = 973,729.62 × 395,489.98
  4. Step 4: Simplify right side
    705,581.77x = 385,100,307,939.21
  5. Step 5: Solve for x
    x = 385,100,307,939.21/705,581.77
  6. Step 6: Final answer
    x = 545,791.18

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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.