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Finding the Fourth Proportional to 111,565.56, 167,348.40 and 70,041.72

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Solution

The fourth proportional to 111,565.56, 167,348.40 and 70,041.72 is: 105,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,565.56 : 167,348.40 = 70,041.72 : x
  2. Step 2: Convert to fraction form
    111,565.56/167,348.40 = 70,041.72/x
  3. Step 3: Cross multiply
    111,565.56x = 167,348.40 × 70,041.72
  4. Step 4: Simplify right side
    111,565.56x = 11,721,369,775.25
  5. Step 5: Solve for x
    x = 11,721,369,775.25/111,565.56
  6. Step 6: Final answer
    x = 105,062.62

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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.