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Finding the Fourth Proportional to 656,006.40, 905,414.40 and 384,134.40

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Solution

The fourth proportional to 656,006.40, 905,414.40 and 384,134.40 is: 530,179.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,006.40 : 905,414.40 = 384,134.40 : x
  2. Step 2: Convert to fraction form
    656,006.40/905,414.40 = 384,134.40/x
  3. Step 3: Cross multiply
    656,006.40x = 905,414.40 × 384,134.40
  4. Step 4: Simplify right side
    656,006.40x = 347,800,817,295.36
  5. Step 5: Solve for x
    x = 347,800,817,295.36/656,006.40
  6. Step 6: Final answer
    x = 530,179.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.