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Finding the Fourth Proportional to 256,299.12, 353,665.80 and 148,848.12

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Solution

The fourth proportional to 256,299.12, 353,665.80 and 148,848.12 is: 205,394.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,299.12 : 353,665.80 = 148,848.12 : x
  2. Step 2: Convert to fraction form
    256,299.12/353,665.80 = 148,848.12/x
  3. Step 3: Cross multiply
    256,299.12x = 353,665.80 × 148,848.12
  4. Step 4: Simplify right side
    256,299.12x = 52,642,489,438.30
  5. Step 5: Solve for x
    x = 52,642,489,438.30/256,299.12
  6. Step 6: Final answer
    x = 205,394.73

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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.