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Finding the Fourth Proportional to 440,907.35, 608,513.88 and 318,796.22

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Solution

The fourth proportional to 440,907.35, 608,513.88 and 318,796.22 is: 439,983.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,907.35 : 608,513.88 = 318,796.22 : x
  2. Step 2: Convert to fraction form
    440,907.35/608,513.88 = 318,796.22/x
  3. Step 3: Cross multiply
    440,907.35x = 608,513.88 × 318,796.22
  4. Step 4: Simplify right side
    440,907.35x = 193,991,924,761.53
  5. Step 5: Solve for x
    x = 193,991,924,761.53/440,907.35
  6. Step 6: Final answer
    x = 439,983.42

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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.