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Finding the Fourth Proportional to 72,456.90, 101,232.30 and 72,456.90

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Solution

The fourth proportional to 72,456.90, 101,232.30 and 72,456.90 is: 101,232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,456.90 : 101,232.30 = 72,456.90 : x
  2. Step 2: Convert to fraction form
    72,456.90/101,232.30 = 72,456.90/x
  3. Step 3: Cross multiply
    72,456.90x = 101,232.30 × 72,456.90
  4. Step 4: Simplify right side
    72,456.90x = 7,334,978,637.87
  5. Step 5: Solve for x
    x = 7,334,978,637.87/72,456.90
  6. Step 6: Final answer
    x = 101,232.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.