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Finding the Fourth Proportional to 99,640.60, 149,259.30 and 62,085.40

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Solution

The fourth proportional to 99,640.60, 149,259.30 and 62,085.40 is: 93,002.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,640.60 : 149,259.30 = 62,085.40 : x
  2. Step 2: Convert to fraction form
    99,640.60/149,259.30 = 62,085.40/x
  3. Step 3: Cross multiply
    99,640.60x = 149,259.30 × 62,085.40
  4. Step 4: Simplify right side
    99,640.60x = 9,266,823,344.22
  5. Step 5: Solve for x
    x = 9,266,823,344.22/99,640.60
  6. Step 6: Final answer
    x = 93,002.48

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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.