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Finding the Fourth Proportional to 110,135.96, 151,978.21 and 61,079.16

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Solution

The fourth proportional to 110,135.96, 151,978.21 and 61,079.16 is: 84,284.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,135.96 : 151,978.21 = 61,079.16 : x
  2. Step 2: Convert to fraction form
    110,135.96/151,978.21 = 61,079.16/x
  3. Step 3: Cross multiply
    110,135.96x = 151,978.21 × 61,079.16
  4. Step 4: Simplify right side
    110,135.96x = 9,282,701,405.10
  5. Step 5: Solve for x
    x = 9,282,701,405.10/110,135.96
  6. Step 6: Final answer
    x = 84,284.02

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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.