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Finding the Fourth Proportional to 65,603.97, 90,436.68 and 46,424.16

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Solution

The fourth proportional to 65,603.97, 90,436.68 and 46,424.16 is: 63,996.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,603.97 : 90,436.68 = 46,424.16 : x
  2. Step 2: Convert to fraction form
    65,603.97/90,436.68 = 46,424.16/x
  3. Step 3: Cross multiply
    65,603.97x = 90,436.68 × 46,424.16
  4. Step 4: Simplify right side
    65,603.97x = 4,198,446,902.19
  5. Step 5: Solve for x
    x = 4,198,446,902.19/65,603.97
  6. Step 6: Final answer
    x = 63,996.84

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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.