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Finding the Fourth Proportional to 519,658.91, 779,510.21 and 253,643.16

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Solution

The fourth proportional to 519,658.91, 779,510.21 and 253,643.16 is: 380,475.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,658.91 : 779,510.21 = 253,643.16 : x
  2. Step 2: Convert to fraction form
    519,658.91/779,510.21 = 253,643.16/x
  3. Step 3: Cross multiply
    519,658.91x = 779,510.21 × 253,643.16
  4. Step 4: Simplify right side
    519,658.91x = 197,717,434,571.61
  5. Step 5: Solve for x
    x = 197,717,434,571.61/519,658.91
  6. Step 6: Final answer
    x = 380,475.41

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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.