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Finding the Fourth Proportional to 519,407.40, 779,256.90 and 253,176.60

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Solution

The fourth proportional to 519,407.40, 779,256.90 and 253,176.60 is: 379,835.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,407.40 : 779,256.90 = 253,176.60 : x
  2. Step 2: Convert to fraction form
    519,407.40/779,256.90 = 253,176.60/x
  3. Step 3: Cross multiply
    519,407.40x = 779,256.90 × 253,176.60
  4. Step 4: Simplify right side
    519,407.40x = 197,289,612,468.54
  5. Step 5: Solve for x
    x = 197,289,612,468.54/519,407.40
  6. Step 6: Final answer
    x = 379,835.97

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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.