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Finding the Fourth Proportional to 625,503,753.54, 863,208,364.14 and 343,243,725.57

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Solution

The fourth proportional to 625,503,753.54, 863,208,364.14 and 343,243,725.57 is: 473,683,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,503,753.54 : 863,208,364.14 = 343,243,725.57 : x
  2. Step 2: Convert to fraction form
    625,503,753.54/863,208,364.14 = 343,243,725.57/x
  3. Step 3: Cross multiply
    625,503,753.54x = 863,208,364.14 × 343,243,725.57
  4. Step 4: Simplify right side
    625,503,753.54x = 296,290,854,850,598,784
  5. Step 5: Solve for x
    x = 296,290,854,850,598,784/625,503,753.54
  6. Step 6: Final answer
    x = 473,683,576.12

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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.