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Finding the Fourth Proportional to 545,843.12, 814,926.64 and 417,085.56

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Solution

The fourth proportional to 545,843.12, 814,926.64 and 417,085.56 is: 622,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,843.12 : 814,926.64 = 417,085.56 : x
  2. Step 2: Convert to fraction form
    545,843.12/814,926.64 = 417,085.56/x
  3. Step 3: Cross multiply
    545,843.12x = 814,926.64 × 417,085.56
  4. Step 4: Simplify right side
    545,843.12x = 339,894,131,917.89
  5. Step 5: Solve for x
    x = 339,894,131,917.89/545,843.12
  6. Step 6: Final answer
    x = 622,695.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.