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Finding the Fourth Proportional to 102,851.51, 154,188.05 and 45,882.59

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Solution

The fourth proportional to 102,851.51, 154,188.05 and 45,882.59 is: 68,784.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,851.51 : 154,188.05 = 45,882.59 : x
  2. Step 2: Convert to fraction form
    102,851.51/154,188.05 = 45,882.59/x
  3. Step 3: Cross multiply
    102,851.51x = 154,188.05 × 45,882.59
  4. Step 4: Simplify right side
    102,851.51x = 7,074,546,080.70
  5. Step 5: Solve for x
    x = 7,074,546,080.70/102,851.51
  6. Step 6: Final answer
    x = 68,784.08

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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.