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Finding the Fourth Proportional to 256,388.40, 353,817.54 and 148,960.62

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Solution

The fourth proportional to 256,388.40, 353,817.54 and 148,960.62 is: 205,566.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,388.40 : 353,817.54 = 148,960.62 : x
  2. Step 2: Convert to fraction form
    256,388.40/353,817.54 = 148,960.62/x
  3. Step 3: Cross multiply
    256,388.40x = 353,817.54 × 148,960.62
  4. Step 4: Simplify right side
    256,388.40x = 52,704,880,125.27
  5. Step 5: Solve for x
    x = 52,704,880,125.27/256,388.40
  6. Step 6: Final answer
    x = 205,566.55

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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.