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Finding the Fourth Proportional to 73,490.31, 101,413.70 and 43,276.91

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Solution

The fourth proportional to 73,490.31, 101,413.70 and 43,276.91 is: 59,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,490.31 : 101,413.70 = 43,276.91 : x
  2. Step 2: Convert to fraction form
    73,490.31/101,413.70 = 43,276.91/x
  3. Step 3: Cross multiply
    73,490.31x = 101,413.70 × 43,276.91
  4. Step 4: Simplify right side
    73,490.31x = 4,388,871,097.75
  5. Step 5: Solve for x
    x = 4,388,871,097.75/73,490.31
  6. Step 6: Final answer
    x = 59,720.40

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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.