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Finding the Fourth Proportional to 439,614.60, 659,421.90 and 410,123.40

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Solution

The fourth proportional to 439,614.60, 659,421.90 and 410,123.40 is: 615,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,614.60 : 659,421.90 = 410,123.40 : x
  2. Step 2: Convert to fraction form
    439,614.60/659,421.90 = 410,123.40/x
  3. Step 3: Cross multiply
    439,614.60x = 659,421.90 × 410,123.40
  4. Step 4: Simplify right side
    439,614.60x = 270,444,351,662.46
  5. Step 5: Solve for x
    x = 270,444,351,662.46/439,614.60
  6. Step 6: Final answer
    x = 615,185.10

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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.