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Finding the Fourth Proportional to 97,431.80, 146,279.10 and 62,439.80

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Solution

The fourth proportional to 97,431.80, 146,279.10 and 62,439.80 is: 93,743.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,431.80 : 146,279.10 = 62,439.80 : x
  2. Step 2: Convert to fraction form
    97,431.80/146,279.10 = 62,439.80/x
  3. Step 3: Cross multiply
    97,431.80x = 146,279.10 × 62,439.80
  4. Step 4: Simplify right side
    97,431.80x = 9,133,637,748.18
  5. Step 5: Solve for x
    x = 9,133,637,748.18/97,431.80
  6. Step 6: Final answer
    x = 93,743.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.