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Finding the Fourth Proportional to 439,863.96, 607,077.53 and 278,734.08

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Solution

The fourth proportional to 439,863.96, 607,077.53 and 278,734.08 is: 384,694.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,863.96 : 607,077.53 = 278,734.08 : x
  2. Step 2: Convert to fraction form
    439,863.96/607,077.53 = 278,734.08/x
  3. Step 3: Cross multiply
    439,863.96x = 607,077.53 × 278,734.08
  4. Step 4: Simplify right side
    439,863.96x = 169,213,196,813.22
  5. Step 5: Solve for x
    x = 169,213,196,813.22/439,863.96
  6. Step 6: Final answer
    x = 384,694.39

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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.