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Finding the Fourth Proportional to 111,565.06, 167,347.62 and 28,459.06

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Solution

The fourth proportional to 111,565.06, 167,347.62 and 28,459.06 is: 42,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,565.06 : 167,347.62 = 28,459.06 : x
  2. Step 2: Convert to fraction form
    111,565.06/167,347.62 = 28,459.06/x
  3. Step 3: Cross multiply
    111,565.06x = 167,347.62 × 28,459.06
  4. Step 4: Simplify right side
    111,565.06x = 4,762,555,958.44
  5. Step 5: Solve for x
    x = 4,762,555,958.44/111,565.06
  6. Step 6: Final answer
    x = 42,688.60

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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.