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Finding the Fourth Proportional to 73,935.40, 102,030.18 and 42,104.20

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Solution

The fourth proportional to 73,935.40, 102,030.18 and 42,104.20 is: 58,103.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,935.40 : 102,030.18 = 42,104.20 : x
  2. Step 2: Convert to fraction form
    73,935.40/102,030.18 = 42,104.20/x
  3. Step 3: Cross multiply
    73,935.40x = 102,030.18 × 42,104.20
  4. Step 4: Simplify right side
    73,935.40x = 4,295,899,104.76
  5. Step 5: Solve for x
    x = 4,295,899,104.76/73,935.40
  6. Step 6: Final answer
    x = 58,103.41

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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.