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Finding the Fourth Proportional to 74,139.62, 111,162.69 and 62,898.89

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Solution

The fourth proportional to 74,139.62, 111,162.69 and 62,898.89 is: 94,308.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,139.62 : 111,162.69 = 62,898.89 : x
  2. Step 2: Convert to fraction form
    74,139.62/111,162.69 = 62,898.89/x
  3. Step 3: Cross multiply
    74,139.62x = 111,162.69 × 62,898.89
  4. Step 4: Simplify right side
    74,139.62x = 6,992,009,254.60
  5. Step 5: Solve for x
    x = 6,992,009,254.60/74,139.62
  6. Step 6: Final answer
    x = 94,308.68

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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.