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Finding the Fourth Proportional to 82,861,331.06, 124,296,978.70 and 25,354,100.45

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Solution

The fourth proportional to 82,861,331.06, 124,296,978.70 and 25,354,100.45 is: 38,032,675.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,861,331.06 : 124,296,978.70 = 25,354,100.45 : x
  2. Step 2: Convert to fraction form
    82,861,331.06/124,296,978.70 = 25,354,100.45/x
  3. Step 3: Cross multiply
    82,861,331.06x = 124,296,978.70 × 25,354,100.45
  4. Step 4: Simplify right side
    82,861,331.06x = 3,151,438,082,969,825.50
  5. Step 5: Solve for x
    x = 3,151,438,082,969,825.50/82,861,331.06
  6. Step 6: Final answer
    x = 38,032,675.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.