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Finding the Fourth Proportional to 447,360.60, 617,321.34 and 256,390.68

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Solution

The fourth proportional to 447,360.60, 617,321.34 and 256,390.68 is: 353,798.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,360.60 : 617,321.34 = 256,390.68 : x
  2. Step 2: Convert to fraction form
    447,360.60/617,321.34 = 256,390.68/x
  3. Step 3: Cross multiply
    447,360.60x = 617,321.34 × 256,390.68
  4. Step 4: Simplify right side
    447,360.60x = 158,275,438,141.11
  5. Step 5: Solve for x
    x = 158,275,438,141.11/447,360.60
  6. Step 6: Final answer
    x = 353,798.34

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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.