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Finding the Fourth Proportional to 256,554.59, 354,045.87 and 143,377.34

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Solution

The fourth proportional to 256,554.59, 354,045.87 and 143,377.34 is: 197,861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,554.59 : 354,045.87 = 143,377.34 : x
  2. Step 2: Convert to fraction form
    256,554.59/354,045.87 = 143,377.34/x
  3. Step 3: Cross multiply
    256,554.59x = 354,045.87 × 143,377.34
  4. Step 4: Simplify right side
    256,554.59x = 50,762,153,308.36
  5. Step 5: Solve for x
    x = 50,762,153,308.36/256,554.59
  6. Step 6: Final answer
    x = 197,861.03

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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.