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Finding the Fourth Proportional to 119,806.86, 179,686.80 and 39,832.32

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Solution

The fourth proportional to 119,806.86, 179,686.80 and 39,832.32 is: 59,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,806.86 : 179,686.80 = 39,832.32 : x
  2. Step 2: Convert to fraction form
    119,806.86/179,686.80 = 39,832.32/x
  3. Step 3: Cross multiply
    119,806.86x = 179,686.80 × 39,832.32
  4. Step 4: Simplify right side
    119,806.86x = 7,157,342,117.38
  5. Step 5: Solve for x
    x = 7,157,342,117.38/119,806.86
  6. Step 6: Final answer
    x = 59,740.67

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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.