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Finding the Fourth Proportional to 111,129.73, 153,353.15 and 60,819.01

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Solution

The fourth proportional to 111,129.73, 153,353.15 and 60,819.01 is: 83,927.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,129.73 : 153,353.15 = 60,819.01 : x
  2. Step 2: Convert to fraction form
    111,129.73/153,353.15 = 60,819.01/x
  3. Step 3: Cross multiply
    111,129.73x = 153,353.15 × 60,819.01
  4. Step 4: Simplify right side
    111,129.73x = 9,326,786,459.29
  5. Step 5: Solve for x
    x = 9,326,786,459.29/111,129.73
  6. Step 6: Final answer
    x = 83,927.01

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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.