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Finding the Fourth Proportional to 111,924.16, 154,455.06 and 61,623.16

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Solution

The fourth proportional to 111,924.16, 154,455.06 and 61,623.16 is: 85,039.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,924.16 : 154,455.06 = 61,623.16 : x
  2. Step 2: Convert to fraction form
    111,924.16/154,455.06 = 61,623.16/x
  3. Step 3: Cross multiply
    111,924.16x = 154,455.06 × 61,623.16
  4. Step 4: Simplify right side
    111,924.16x = 9,518,008,875.19
  5. Step 5: Solve for x
    x = 9,518,008,875.19/111,924.16
  6. Step 6: Final answer
    x = 85,039.81

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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.