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Finding the Fourth Proportional to 256,440.40, 353,894.82 and 141,726.48

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Solution

The fourth proportional to 256,440.40, 353,894.82 and 141,726.48 is: 195,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,440.40 : 353,894.82 = 141,726.48 : x
  2. Step 2: Convert to fraction form
    256,440.40/353,894.82 = 141,726.48/x
  3. Step 3: Cross multiply
    256,440.40x = 353,894.82 × 141,726.48
  4. Step 4: Simplify right side
    256,440.40x = 50,156,267,128.83
  5. Step 5: Solve for x
    x = 50,156,267,128.83/256,440.40
  6. Step 6: Final answer
    x = 195,586.45

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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.