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Finding the Fourth Proportional to 256,133.70, 384,200.55 and 243,011.70

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Solution

The fourth proportional to 256,133.70, 384,200.55 and 243,011.70 is: 364,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,133.70 : 384,200.55 = 243,011.70 : x
  2. Step 2: Convert to fraction form
    256,133.70/384,200.55 = 243,011.70/x
  3. Step 3: Cross multiply
    256,133.70x = 384,200.55 × 243,011.70
  4. Step 4: Simplify right side
    256,133.70x = 93,365,228,796.44
  5. Step 5: Solve for x
    x = 93,365,228,796.44/256,133.70
  6. Step 6: Final answer
    x = 364,517.55

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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.