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Finding the Fourth Proportional to 519,823.54, 779,106.99 and 253,184.50

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Solution

The fourth proportional to 519,823.54, 779,106.99 and 253,184.50 is: 379,470.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,823.54 : 779,106.99 = 253,184.50 : x
  2. Step 2: Convert to fraction form
    519,823.54/779,106.99 = 253,184.50/x
  3. Step 3: Cross multiply
    519,823.54x = 779,106.99 × 253,184.50
  4. Step 4: Simplify right side
    519,823.54x = 197,257,813,709.66
  5. Step 5: Solve for x
    x = 197,257,813,709.66/519,823.54
  6. Step 6: Final answer
    x = 379,470.72

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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.