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Finding the Fourth Proportional to 669,039.60, 924,040.90 and 440,617.96

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Solution

The fourth proportional to 669,039.60, 924,040.90 and 440,617.96 is: 608,557.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,039.60 : 924,040.90 = 440,617.96 : x
  2. Step 2: Convert to fraction form
    669,039.60/924,040.90 = 440,617.96/x
  3. Step 3: Cross multiply
    669,039.60x = 924,040.90 × 440,617.96
  4. Step 4: Simplify right side
    669,039.60x = 407,149,016,314.56
  5. Step 5: Solve for x
    x = 407,149,016,314.56/669,039.60
  6. Step 6: Final answer
    x = 608,557.43

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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.