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Finding the Fourth Proportional to 439,713.40, 659,570.10 and 439,713.40

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Solution

The fourth proportional to 439,713.40, 659,570.10 and 439,713.40 is: 659,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,713.40 : 659,570.10 = 439,713.40 : x
  2. Step 2: Convert to fraction form
    439,713.40/659,570.10 = 439,713.40/x
  3. Step 3: Cross multiply
    439,713.40x = 659,570.10 × 439,713.40
  4. Step 4: Simplify right side
    439,713.40x = 290,021,811,209.34
  5. Step 5: Solve for x
    x = 290,021,811,209.34/439,713.40
  6. Step 6: Final answer
    x = 659,570.10

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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.