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Finding the Fourth Proportional to 117,911.22, 162,825.60 and 74,904.60

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Solution

The fourth proportional to 117,911.22, 162,825.60 and 74,904.60 is: 103,437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,911.22 : 162,825.60 = 74,904.60 : x
  2. Step 2: Convert to fraction form
    117,911.22/162,825.60 = 74,904.60/x
  3. Step 3: Cross multiply
    117,911.22x = 162,825.60 × 74,904.60
  4. Step 4: Simplify right side
    117,911.22x = 12,196,386,437.76
  5. Step 5: Solve for x
    x = 12,196,386,437.76/117,911.22
  6. Step 6: Final answer
    x = 103,437.03

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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.