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Finding the Fourth Proportional to 545,838.62, 814,919.92 and 417,081.05

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Solution

The fourth proportional to 545,838.62, 814,919.92 and 417,081.05 is: 622,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,838.62 : 814,919.92 = 417,081.05 : x
  2. Step 2: Convert to fraction form
    545,838.62/814,919.92 = 417,081.05/x
  3. Step 3: Cross multiply
    545,838.62x = 814,919.92 × 417,081.05
  4. Step 4: Simplify right side
    545,838.62x = 339,887,655,899.52
  5. Step 5: Solve for x
    x = 339,887,655,899.52/545,838.62
  6. Step 6: Final answer
    x = 622,688.91

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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.