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Finding the Fourth Proportional to 604,133.40, 905,163.30 and 287,909.40

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Solution

The fourth proportional to 604,133.40, 905,163.30 and 287,909.40 is: 431,370.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,133.40 : 905,163.30 = 287,909.40 : x
  2. Step 2: Convert to fraction form
    604,133.40/905,163.30 = 287,909.40/x
  3. Step 3: Cross multiply
    604,133.40x = 905,163.30 × 287,909.40
  4. Step 4: Simplify right side
    604,133.40x = 260,605,022,605.02
  5. Step 5: Solve for x
    x = 260,605,022,605.02/604,133.40
  6. Step 6: Final answer
    x = 431,370.00

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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.