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Finding the Fourth Proportional to 111,873.96, 154,386.20 and 60,886.55

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Solution

The fourth proportional to 111,873.96, 154,386.20 and 60,886.55 is: 84,023.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,873.96 : 154,386.20 = 60,886.55 : x
  2. Step 2: Convert to fraction form
    111,873.96/154,386.20 = 60,886.55/x
  3. Step 3: Cross multiply
    111,873.96x = 154,386.20 × 60,886.55
  4. Step 4: Simplify right side
    111,873.96x = 9,400,043,623.79
  5. Step 5: Solve for x
    x = 9,400,043,623.79/111,873.96
  6. Step 6: Final answer
    x = 84,023.52

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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.