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Finding the Fourth Proportional to 256,458.50, 353,903.15 and 147,579.65

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Solution

The fourth proportional to 256,458.50, 353,903.15 and 147,579.65 is: 203,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,458.50 : 353,903.15 = 147,579.65 : x
  2. Step 2: Convert to fraction form
    256,458.50/353,903.15 = 147,579.65/x
  3. Step 3: Cross multiply
    256,458.50x = 353,903.15 × 147,579.65
  4. Step 4: Simplify right side
    256,458.50x = 52,228,902,273.00
  5. Step 5: Solve for x
    x = 52,228,902,273.00/256,458.50
  6. Step 6: Final answer
    x = 203,654.40

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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.