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Finding the Fourth Proportional to 818,793.51, 1,129,920.00 and 456,209.57

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Solution

The fourth proportional to 818,793.51, 1,129,920.00 and 456,209.57 is: 629,560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,793.51 : 1,129,920.00 = 456,209.57 : x
  2. Step 2: Convert to fraction form
    818,793.51/1,129,920.00 = 456,209.57/x
  3. Step 3: Cross multiply
    818,793.51x = 1,129,920.00 × 456,209.57
  4. Step 4: Simplify right side
    818,793.51x = 515,480,315,941.88
  5. Step 5: Solve for x
    x = 515,480,315,941.88/818,793.51
  6. Step 6: Final answer
    x = 629,560.82

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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.