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Finding the Fourth Proportional to 303,643.40, 455,246.40 and 170,564.46

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Solution

The fourth proportional to 303,643.40, 455,246.40 and 170,564.46 is: 255,723.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,643.40 : 455,246.40 = 170,564.46 : x
  2. Step 2: Convert to fraction form
    303,643.40/455,246.40 = 170,564.46/x
  3. Step 3: Cross multiply
    303,643.40x = 455,246.40 × 170,564.46
  4. Step 4: Simplify right side
    303,643.40x = 77,648,856,382.94
  5. Step 5: Solve for x
    x = 77,648,856,382.94/303,643.40
  6. Step 6: Final answer
    x = 255,723.84

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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.