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Finding the Fourth Proportional to 425,894,679.72, 587,736,429.12 and 230,324,391.72

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Solution

The fourth proportional to 425,894,679.72, 587,736,429.12 and 230,324,391.72 is: 317,848,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,894,679.72 : 587,736,429.12 = 230,324,391.72 : x
  2. Step 2: Convert to fraction form
    425,894,679.72/587,736,429.12 = 230,324,391.72/x
  3. Step 3: Cross multiply
    425,894,679.72x = 587,736,429.12 × 230,324,391.72
  4. Step 4: Simplify right side
    425,894,679.72x = 135,370,035,528,748,896
  5. Step 5: Solve for x
    x = 135,370,035,528,748,896/425,894,679.72
  6. Step 6: Final answer
    x = 317,848,618.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.