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Finding the Fourth Proportional to 354,317.40, 488,960.94 and 193,173.60

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Solution

The fourth proportional to 354,317.40, 488,960.94 and 193,173.60 is: 266,581.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,317.40 : 488,960.94 = 193,173.60 : x
  2. Step 2: Convert to fraction form
    354,317.40/488,960.94 = 193,173.60/x
  3. Step 3: Cross multiply
    354,317.40x = 488,960.94 × 193,173.60
  4. Step 4: Simplify right side
    354,317.40x = 94,454,345,039.18
  5. Step 5: Solve for x
    x = 94,454,345,039.18/354,317.40
  6. Step 6: Final answer
    x = 266,581.16

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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.