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Finding the Fourth Proportional to 168,907.01, 253,434.02 and 105,871.59

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Solution

The fourth proportional to 168,907.01, 253,434.02 and 105,871.59 is: 158,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,907.01 : 253,434.02 = 105,871.59 : x
  2. Step 2: Convert to fraction form
    168,907.01/253,434.02 = 105,871.59/x
  3. Step 3: Cross multiply
    168,907.01x = 253,434.02 × 105,871.59
  4. Step 4: Simplify right side
    168,907.01x = 26,831,462,128.13
  5. Step 5: Solve for x
    x = 26,831,462,128.13/168,907.01
  6. Step 6: Final answer
    x = 158,853.46

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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.