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Finding the Fourth Proportional to 256,356.06, 353,740.90 and 154,379.90

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Solution

The fourth proportional to 256,356.06, 353,740.90 and 154,379.90 is: 213,025.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,356.06 : 353,740.90 = 154,379.90 : x
  2. Step 2: Convert to fraction form
    256,356.06/353,740.90 = 154,379.90/x
  3. Step 3: Cross multiply
    256,356.06x = 353,740.90 × 154,379.90
  4. Step 4: Simplify right side
    256,356.06x = 54,610,484,767.91
  5. Step 5: Solve for x
    x = 54,610,484,767.91/256,356.06
  6. Step 6: Final answer
    x = 213,025.92

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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.