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Finding the Fourth Proportional to 439,989.66, 607,194.34 and 287,125.64

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Solution

The fourth proportional to 439,989.66, 607,194.34 and 287,125.64 is: 396,239.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,989.66 : 607,194.34 = 287,125.64 : x
  2. Step 2: Convert to fraction form
    439,989.66/607,194.34 = 287,125.64/x
  3. Step 3: Cross multiply
    439,989.66x = 607,194.34 × 287,125.64
  4. Step 4: Simplify right side
    439,989.66x = 174,341,063,476.88
  5. Step 5: Solve for x
    x = 174,341,063,476.88/439,989.66
  6. Step 6: Final answer
    x = 396,239.00

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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.