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Finding the Fourth Proportional to 519,658.16, 779,509.08 and 253,642.41

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Solution

The fourth proportional to 519,658.16, 779,509.08 and 253,642.41 is: 380,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,658.16 : 779,509.08 = 253,642.41 : x
  2. Step 2: Convert to fraction form
    519,658.16/779,509.08 = 253,642.41/x
  3. Step 3: Cross multiply
    519,658.16x = 779,509.08 × 253,642.41
  4. Step 4: Simplify right side
    519,658.16x = 197,716,560,716.92
  5. Step 5: Solve for x
    x = 197,716,560,716.92/519,658.16
  6. Step 6: Final answer
    x = 380,474.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.