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Finding the Fourth Proportional to 111,996.40, 169,031.62 and 111,996.40

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Solution

The fourth proportional to 111,996.40, 169,031.62 and 111,996.40 is: 169,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,996.40 : 169,031.62 = 111,996.40 : x
  2. Step 2: Convert to fraction form
    111,996.40/169,031.62 = 111,996.40/x
  3. Step 3: Cross multiply
    111,996.40x = 169,031.62 × 111,996.40
  4. Step 4: Simplify right side
    111,996.40x = 18,930,932,926.17
  5. Step 5: Solve for x
    x = 18,930,932,926.17/111,996.40
  6. Step 6: Final answer
    x = 169,031.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.