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Finding the Fourth Proportional to 292,887.40, 439,331.10 and 82,522.60

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Solution

The fourth proportional to 292,887.40, 439,331.10 and 82,522.60 is: 123,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,887.40 : 439,331.10 = 82,522.60 : x
  2. Step 2: Convert to fraction form
    292,887.40/439,331.10 = 82,522.60/x
  3. Step 3: Cross multiply
    292,887.40x = 439,331.10 × 82,522.60
  4. Step 4: Simplify right side
    292,887.40x = 36,254,744,632.86
  5. Step 5: Solve for x
    x = 36,254,744,632.86/292,887.40
  6. Step 6: Final answer
    x = 123,783.90

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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.