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Finding the Fourth Proportional to 621,453.53, 857,507.00 and 349,468.85

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Solution

The fourth proportional to 621,453.53, 857,507.00 and 349,468.85 is: 482,211.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,453.53 : 857,507.00 = 349,468.85 : x
  2. Step 2: Convert to fraction form
    621,453.53/857,507.00 = 349,468.85/x
  3. Step 3: Cross multiply
    621,453.53x = 857,507.00 × 349,468.85
  4. Step 4: Simplify right side
    621,453.53x = 299,671,979,122.07
  5. Step 5: Solve for x
    x = 299,671,979,122.07/621,453.53
  6. Step 6: Final answer
    x = 482,211.41

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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.