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Finding the Fourth Proportional to 111,616.73, 154,031.12 and 61,315.73

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Solution

The fourth proportional to 111,616.73, 154,031.12 and 61,315.73 is: 84,615.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,616.73 : 154,031.12 = 61,315.73 : x
  2. Step 2: Convert to fraction form
    111,616.73/154,031.12 = 61,315.73/x
  3. Step 3: Cross multiply
    111,616.73x = 154,031.12 × 61,315.73
  4. Step 4: Simplify right side
    111,616.73x = 9,444,531,162.76
  5. Step 5: Solve for x
    x = 9,444,531,162.76/111,616.73
  6. Step 6: Final answer
    x = 84,615.73

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1.5x scale

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.