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Finding the Fourth Proportional to 1,294,905.40, 1,941,774.90 and 495,921.40

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Solution

The fourth proportional to 1,294,905.40, 1,941,774.90 and 495,921.40 is: 743,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,905.40 : 1,941,774.90 = 495,921.40 : x
  2. Step 2: Convert to fraction form
    1,294,905.40/1,941,774.90 = 495,921.40/x
  3. Step 3: Cross multiply
    1,294,905.40x = 1,941,774.90 × 495,921.40
  4. Step 4: Simplify right side
    1,294,905.40x = 962,967,726,892.86
  5. Step 5: Solve for x
    x = 962,967,726,892.86/1,294,905.40
  6. Step 6: Final answer
    x = 743,658.75

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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.