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Finding the Fourth Proportional to 354,136.57, 488,708.56 and 192,991.66

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Solution

The fourth proportional to 354,136.57, 488,708.56 and 192,991.66 is: 266,328.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,136.57 : 488,708.56 = 192,991.66 : x
  2. Step 2: Convert to fraction form
    354,136.57/488,708.56 = 192,991.66/x
  3. Step 3: Cross multiply
    354,136.57x = 488,708.56 × 192,991.66
  4. Step 4: Simplify right side
    354,136.57x = 94,316,676,250.61
  5. Step 5: Solve for x
    x = 94,316,676,250.61/354,136.57
  6. Step 6: Final answer
    x = 266,328.54

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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.