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Finding the Fourth Proportional to 111,718.64, 154,168.48 and 63,325.03

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Solution

The fourth proportional to 111,718.64, 154,168.48 and 63,325.03 is: 87,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,718.64 : 154,168.48 = 63,325.03 : x
  2. Step 2: Convert to fraction form
    111,718.64/154,168.48 = 63,325.03/x
  3. Step 3: Cross multiply
    111,718.64x = 154,168.48 × 63,325.03
  4. Step 4: Simplify right side
    111,718.64x = 9,762,722,612.74
  5. Step 5: Solve for x
    x = 9,762,722,612.74/111,718.64
  6. Step 6: Final answer
    x = 87,386.70

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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.