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Finding the Fourth Proportional to 459,884.25, 689,865.26 and 127,460.25

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Solution

The fourth proportional to 459,884.25, 689,865.26 and 127,460.25 is: 191,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,884.25 : 689,865.26 = 127,460.25 : x
  2. Step 2: Convert to fraction form
    459,884.25/689,865.26 = 127,460.25/x
  3. Step 3: Cross multiply
    459,884.25x = 689,865.26 × 127,460.25
  4. Step 4: Simplify right side
    459,884.25x = 87,930,397,868.61
  5. Step 5: Solve for x
    x = 87,930,397,868.61/459,884.25
  6. Step 6: Final answer
    x = 191,201.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.