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Finding the Fourth Proportional to 255,861.20, 353,058.90 and 148,392.20

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Solution

The fourth proportional to 255,861.20, 353,058.90 and 148,392.20 is: 204,764.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,861.20 : 353,058.90 = 148,392.20 : x
  2. Step 2: Convert to fraction form
    255,861.20/353,058.90 = 148,392.20/x
  3. Step 3: Cross multiply
    255,861.20x = 353,058.90 × 148,392.20
  4. Step 4: Simplify right side
    255,861.20x = 52,391,186,900.58
  5. Step 5: Solve for x
    x = 52,391,186,900.58/255,861.20
  6. Step 6: Final answer
    x = 204,764.09

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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.