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Finding the Fourth Proportional to 111,459.85, 166,904.33 and 61,484.40

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Solution

The fourth proportional to 111,459.85, 166,904.33 and 61,484.40 is: 92,069.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,459.85 : 166,904.33 = 61,484.40 : x
  2. Step 2: Convert to fraction form
    111,459.85/166,904.33 = 61,484.40/x
  3. Step 3: Cross multiply
    111,459.85x = 166,904.33 × 61,484.40
  4. Step 4: Simplify right side
    111,459.85x = 10,262,012,280.03
  5. Step 5: Solve for x
    x = 10,262,012,280.03/111,459.85
  6. Step 6: Final answer
    x = 92,069.14

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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.