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Finding the Fourth Proportional to 111,095.76, 153,152.67 and 79,209.30

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Solution

The fourth proportional to 111,095.76, 153,152.67 and 79,209.30 is: 109,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,095.76 : 153,152.67 = 79,209.30 : x
  2. Step 2: Convert to fraction form
    111,095.76/153,152.67 = 79,209.30/x
  3. Step 3: Cross multiply
    111,095.76x = 153,152.67 × 79,209.30
  4. Step 4: Simplify right side
    111,095.76x = 12,131,115,783.83
  5. Step 5: Solve for x
    x = 12,131,115,783.83/111,095.76
  6. Step 6: Final answer
    x = 109,195.13

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.