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Finding the Fourth Proportional to 519,440.80, 779,234.10 and 164,417.80

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Solution

The fourth proportional to 519,440.80, 779,234.10 and 164,417.80 is: 246,649.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,440.80 : 779,234.10 = 164,417.80 : x
  2. Step 2: Convert to fraction form
    519,440.80/779,234.10 = 164,417.80/x
  3. Step 3: Cross multiply
    519,440.80x = 779,234.10 × 164,417.80
  4. Step 4: Simplify right side
    519,440.80x = 128,119,956,406.98
  5. Step 5: Solve for x
    x = 128,119,956,406.98/519,440.80
  6. Step 6: Final answer
    x = 246,649.77

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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.