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Finding the Fourth Proportional to 111,956.40, 167,934.60 and 64,717.20

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Solution

The fourth proportional to 111,956.40, 167,934.60 and 64,717.20 is: 97,075.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,956.40 : 167,934.60 = 64,717.20 : x
  2. Step 2: Convert to fraction form
    111,956.40/167,934.60 = 64,717.20/x
  3. Step 3: Cross multiply
    111,956.40x = 167,934.60 × 64,717.20
  4. Step 4: Simplify right side
    111,956.40x = 10,868,257,095.12
  5. Step 5: Solve for x
    x = 10,868,257,095.12/111,956.40
  6. Step 6: Final answer
    x = 97,075.80

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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.