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Finding the Fourth Proportional to 158,006.56, 217,919.14 and 112,670.05

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Solution

The fourth proportional to 158,006.56, 217,919.14 and 112,670.05 is: 155,392.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,006.56 : 217,919.14 = 112,670.05 : x
  2. Step 2: Convert to fraction form
    158,006.56/217,919.14 = 112,670.05/x
  3. Step 3: Cross multiply
    158,006.56x = 217,919.14 × 112,670.05
  4. Step 4: Simplify right side
    158,006.56x = 24,552,960,399.76
  5. Step 5: Solve for x
    x = 24,552,960,399.76/158,006.56
  6. Step 6: Final answer
    x = 155,392.03

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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.