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Finding the Fourth Proportional to 514,139.80, 771,209.70 and 303,669.40

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Solution

The fourth proportional to 514,139.80, 771,209.70 and 303,669.40 is: 455,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,139.80 : 771,209.70 = 303,669.40 : x
  2. Step 2: Convert to fraction form
    514,139.80/771,209.70 = 303,669.40/x
  3. Step 3: Cross multiply
    514,139.80x = 771,209.70 × 303,669.40
  4. Step 4: Simplify right side
    514,139.80x = 234,192,786,873.18
  5. Step 5: Solve for x
    x = 234,192,786,873.18/514,139.80
  6. Step 6: Final answer
    x = 455,504.10

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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.