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Finding the Fourth Proportional to 509,304.81, 763,957.35 and 189,414.88

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Solution

The fourth proportional to 509,304.81, 763,957.35 and 189,414.88 is: 284,122.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,304.81 : 763,957.35 = 189,414.88 : x
  2. Step 2: Convert to fraction form
    509,304.81/763,957.35 = 189,414.88/x
  3. Step 3: Cross multiply
    509,304.81x = 763,957.35 × 189,414.88
  4. Step 4: Simplify right side
    509,304.81x = 144,704,887,865.48
  5. Step 5: Solve for x
    x = 144,704,887,865.48/509,304.81
  6. Step 6: Final answer
    x = 284,122.37

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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.