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Finding the Fourth Proportional to 181,057.97, 249,848.36 and 100,485.55

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Solution

The fourth proportional to 181,057.97, 249,848.36 and 100,485.55 is: 138,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,057.97 : 249,848.36 = 100,485.55 : x
  2. Step 2: Convert to fraction form
    181,057.97/249,848.36 = 100,485.55/x
  3. Step 3: Cross multiply
    181,057.97x = 249,848.36 × 100,485.55
  4. Step 4: Simplify right side
    181,057.97x = 25,106,149,871.20
  5. Step 5: Solve for x
    x = 25,106,149,871.20/181,057.97
  6. Step 6: Final answer
    x = 138,663.60

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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.