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Finding the Fourth Proportional to 256,968.60, 385,890.30 and 190,483.80

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Solution

The fourth proportional to 256,968.60, 385,890.30 and 190,483.80 is: 286,049.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,968.60 : 385,890.30 = 190,483.80 : x
  2. Step 2: Convert to fraction form
    256,968.60/385,890.30 = 190,483.80/x
  3. Step 3: Cross multiply
    256,968.60x = 385,890.30 × 190,483.80
  4. Step 4: Simplify right side
    256,968.60x = 73,505,850,727.14
  5. Step 5: Solve for x
    x = 73,505,850,727.14/256,968.60
  6. Step 6: Final answer
    x = 286,049.93

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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.