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Finding the Fourth Proportional to 73,159.00, 109,082.90 and 71,830.40

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Solution

The fourth proportional to 73,159.00, 109,082.90 and 71,830.40 is: 107,101.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,159.00 : 109,082.90 = 71,830.40 : x
  2. Step 2: Convert to fraction form
    73,159.00/109,082.90 = 71,830.40/x
  3. Step 3: Cross multiply
    73,159.00x = 109,082.90 × 71,830.40
  4. Step 4: Simplify right side
    73,159.00x = 7,835,467,974.32
  5. Step 5: Solve for x
    x = 7,835,467,974.32/73,159.00
  6. Step 6: Final answer
    x = 107,101.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.