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Finding the Fourth Proportional to 570,185.28, 855,591.12 and 289,726.56

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Solution

The fourth proportional to 570,185.28, 855,591.12 and 289,726.56 is: 434,748.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,185.28 : 855,591.12 = 289,726.56 : x
  2. Step 2: Convert to fraction form
    570,185.28/855,591.12 = 289,726.56/x
  3. Step 3: Cross multiply
    570,185.28x = 855,591.12 × 289,726.56
  4. Step 4: Simplify right side
    570,185.28x = 247,887,471,964.15
  5. Step 5: Solve for x
    x = 247,887,471,964.15/570,185.28
  6. Step 6: Final answer
    x = 434,748.99

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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.