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Finding the Fourth Proportional to 256,710.90, 385,059.15 and 116,469.30

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Solution

The fourth proportional to 256,710.90, 385,059.15 and 116,469.30 is: 174,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,710.90 : 385,059.15 = 116,469.30 : x
  2. Step 2: Convert to fraction form
    256,710.90/385,059.15 = 116,469.30/x
  3. Step 3: Cross multiply
    256,710.90x = 385,059.15 × 116,469.30
  4. Step 4: Simplify right side
    256,710.90x = 44,847,569,659.10
  5. Step 5: Solve for x
    x = 44,847,569,659.10/256,710.90
  6. Step 6: Final answer
    x = 174,700.68

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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.