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Finding the Fourth Proportional to 58,458,427.80, 81,976,168.20 and 58,458,427.80

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Solution

The fourth proportional to 58,458,427.80, 81,976,168.20 and 58,458,427.80 is: 81,976,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,458,427.80 : 81,976,168.20 = 58,458,427.80 : x
  2. Step 2: Convert to fraction form
    58,458,427.80/81,976,168.20 = 58,458,427.80/x
  3. Step 3: Cross multiply
    58,458,427.80x = 81,976,168.20 × 58,458,427.80
  4. Step 4: Simplify right side
    58,458,427.80x = 4,792,197,910,040,356
  5. Step 5: Solve for x
    x = 4,792,197,910,040,356/58,458,427.80
  6. Step 6: Final answer
    x = 81,976,168.20

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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.