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Finding the Fourth Proportional to 111,772.62, 154,243.08 and 61,471.62

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Solution

The fourth proportional to 111,772.62, 154,243.08 and 61,471.62 is: 84,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,772.62 : 154,243.08 = 61,471.62 : x
  2. Step 2: Convert to fraction form
    111,772.62/154,243.08 = 61,471.62/x
  3. Step 3: Cross multiply
    111,772.62x = 154,243.08 × 61,471.62
  4. Step 4: Simplify right side
    111,772.62x = 9,481,572,001.39
  5. Step 5: Solve for x
    x = 9,481,572,001.39/111,772.62
  6. Step 6: Final answer
    x = 84,829.11

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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.