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Finding the Fourth Proportional to 331,915,117.80, 465,361,409.40 and 331,915,117.80

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Solution

The fourth proportional to 331,915,117.80, 465,361,409.40 and 331,915,117.80 is: 465,361,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,915,117.80 : 465,361,409.40 = 331,915,117.80 : x
  2. Step 2: Convert to fraction form
    331,915,117.80/465,361,409.40 = 331,915,117.80/x
  3. Step 3: Cross multiply
    331,915,117.80x = 465,361,409.40 × 331,915,117.80
  4. Step 4: Simplify right side
    331,915,117.80x = 154,460,487,020,575,040
  5. Step 5: Solve for x
    x = 154,460,487,020,575,040/331,915,117.80
  6. Step 6: Final answer
    x = 465,361,409.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.