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Finding the Fourth Proportional to 111,971, 154,521.68 and 60,986.12

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Solution

The fourth proportional to 111,971, 154,521.68 and 60,986.12 is: 84,161.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,971 : 154,521.68 = 60,986.12 : x
  2. Step 2: Convert to fraction form
    111,971/154,521.68 = 60,986.12/x
  3. Step 3: Cross multiply
    111,971x = 154,521.68 × 60,986.12
  4. Step 4: Simplify right side
    111,971x = 9,423,677,719.08
  5. Step 5: Solve for x
    x = 9,423,677,719.08/111,971
  6. Step 6: Final answer
    x = 84,161.77

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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.