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Finding the Fourth Proportional to 111,424.11, 153,756.14 and 61,123.11

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Solution

The fourth proportional to 111,424.11, 153,756.14 and 61,123.11 is: 84,344.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,424.11 : 153,756.14 = 61,123.11 : x
  2. Step 2: Convert to fraction form
    111,424.11/153,756.14 = 61,123.11/x
  3. Step 3: Cross multiply
    111,424.11x = 153,756.14 × 61,123.11
  4. Step 4: Simplify right side
    111,424.11x = 9,398,053,152.78
  5. Step 5: Solve for x
    x = 9,398,053,152.78/111,424.11
  6. Step 6: Final answer
    x = 84,344.88

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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.