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Finding the Fourth Proportional to 442,667,363.70, 664,001,045.55 and 310,657,419.30

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Solution

The fourth proportional to 442,667,363.70, 664,001,045.55 and 310,657,419.30 is: 465,986,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,667,363.70 : 664,001,045.55 = 310,657,419.30 : x
  2. Step 2: Convert to fraction form
    442,667,363.70/664,001,045.55 = 310,657,419.30/x
  3. Step 3: Cross multiply
    442,667,363.70x = 664,001,045.55 × 310,657,419.30
  4. Step 4: Simplify right side
    442,667,363.70x = 206,276,851,223,064,736
  5. Step 5: Solve for x
    x = 206,276,851,223,064,736/442,667,363.70
  6. Step 6: Final answer
    x = 465,986,128.95

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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.