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Finding the Fourth Proportional to 256,061.23, 353,506.03 and 154,111.71

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Solution

The fourth proportional to 256,061.23, 353,506.03 and 154,111.71 is: 212,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,061.23 : 353,506.03 = 154,111.71 : x
  2. Step 2: Convert to fraction form
    256,061.23/353,506.03 = 154,111.71/x
  3. Step 3: Cross multiply
    256,061.23x = 353,506.03 × 154,111.71
  4. Step 4: Simplify right side
    256,061.23x = 54,479,419,718.98
  5. Step 5: Solve for x
    x = 54,479,419,718.98/256,061.23
  6. Step 6: Final answer
    x = 212,759.35

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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.