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Finding the Fourth Proportional to 256,218.72, 383,812.96 and 127,747.36

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Solution

The fourth proportional to 256,218.72, 383,812.96 and 127,747.36 is: 191,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,218.72 : 383,812.96 = 127,747.36 : x
  2. Step 2: Convert to fraction form
    256,218.72/383,812.96 = 127,747.36/x
  3. Step 3: Cross multiply
    256,218.72x = 383,812.96 × 127,747.36
  4. Step 4: Simplify right side
    256,218.72x = 49,031,092,373.79
  5. Step 5: Solve for x
    x = 49,031,092,373.79/256,218.72
  6. Step 6: Final answer
    x = 191,364.21

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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.