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Finding the Fourth Proportional to 58,459,736.80, 81,978,000.80 and 58,459,736.80

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Solution

The fourth proportional to 58,459,736.80, 81,978,000.80 and 58,459,736.80 is: 81,978,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,459,736.80 : 81,978,000.80 = 58,459,736.80 : x
  2. Step 2: Convert to fraction form
    58,459,736.80/81,978,000.80 = 58,459,736.80/x
  3. Step 3: Cross multiply
    58,459,736.80x = 81,978,000.80 × 58,459,736.80
  4. Step 4: Simplify right side
    58,459,736.80x = 4,792,412,350,158,189
  5. Step 5: Solve for x
    x = 4,792,412,350,158,189/58,459,736.80
  6. Step 6: Final answer
    x = 81,978,000.80

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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.