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Finding the Fourth Proportional to 109,992.70, 151,788.74 and 61,595.08

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Solution

The fourth proportional to 109,992.70, 151,788.74 and 61,595.08 is: 85,000.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,992.70 : 151,788.74 = 61,595.08 : x
  2. Step 2: Convert to fraction form
    109,992.70/151,788.74 = 61,595.08/x
  3. Step 3: Cross multiply
    109,992.70x = 151,788.74 × 61,595.08
  4. Step 4: Simplify right side
    109,992.70x = 9,349,439,583.40
  5. Step 5: Solve for x
    x = 9,349,439,583.40/109,992.70
  6. Step 6: Final answer
    x = 85,000.55

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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.