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Finding the Fourth Proportional to 181,911.83, 251,015.00 and 105,430.40

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Solution

The fourth proportional to 181,911.83, 251,015.00 and 105,430.40 is: 145,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,911.83 : 251,015.00 = 105,430.40 : x
  2. Step 2: Convert to fraction form
    181,911.83/251,015.00 = 105,430.40/x
  3. Step 3: Cross multiply
    181,911.83x = 251,015.00 × 105,430.40
  4. Step 4: Simplify right side
    181,911.83x = 26,464,610,073.77
  5. Step 5: Solve for x
    x = 26,464,610,073.77/181,911.83
  6. Step 6: Final answer
    x = 145,480.43

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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.