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Finding the Fourth Proportional to 456,463.20, 684,694.80 and 119,503.20

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Solution

The fourth proportional to 456,463.20, 684,694.80 and 119,503.20 is: 179,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,463.20 : 684,694.80 = 119,503.20 : x
  2. Step 2: Convert to fraction form
    456,463.20/684,694.80 = 119,503.20/x
  3. Step 3: Cross multiply
    456,463.20x = 684,694.80 × 119,503.20
  4. Step 4: Simplify right side
    456,463.20x = 81,823,219,623.36
  5. Step 5: Solve for x
    x = 81,823,219,623.36/456,463.20
  6. Step 6: Final answer
    x = 179,254.80

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Similar ratio
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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.