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Finding the Fourth Proportional to 256,686.85, 354,085.65 and 149,245.01

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Solution

The fourth proportional to 256,686.85, 354,085.65 and 149,245.01 is: 205,875.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,686.85 : 354,085.65 = 149,245.01 : x
  2. Step 2: Convert to fraction form
    256,686.85/354,085.65 = 149,245.01/x
  3. Step 3: Cross multiply
    256,686.85x = 354,085.65 × 149,245.01
  4. Step 4: Simplify right side
    256,686.85x = 52,845,516,375.11
  5. Step 5: Solve for x
    x = 52,845,516,375.11/256,686.85
  6. Step 6: Final answer
    x = 205,875.43

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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.