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Finding the Fourth Proportional to 439,258.68, 606,474.54 and 278,256.60

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Solution

The fourth proportional to 439,258.68, 606,474.54 and 278,256.60 is: 384,182.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,258.68 : 606,474.54 = 278,256.60 : x
  2. Step 2: Convert to fraction form
    439,258.68/606,474.54 = 278,256.60/x
  3. Step 3: Cross multiply
    439,258.68x = 606,474.54 × 278,256.60
  4. Step 4: Simplify right side
    439,258.68x = 168,755,543,486.96
  5. Step 5: Solve for x
    x = 168,755,543,486.96/439,258.68
  6. Step 6: Final answer
    x = 384,182.60

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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.