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Finding the Fourth Proportional to 72,685.20, 101,526 and 72,685.20

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Solution

The fourth proportional to 72,685.20, 101,526 and 72,685.20 is: 101,526

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,685.20 : 101,526 = 72,685.20 : x
  2. Step 2: Convert to fraction form
    72,685.20/101,526 = 72,685.20/x
  3. Step 3: Cross multiply
    72,685.20x = 101,526 × 72,685.20
  4. Step 4: Simplify right side
    72,685.20x = 7,379,437,615.20
  5. Step 5: Solve for x
    x = 7,379,437,615.20/72,685.20
  6. Step 6: Final answer
    x = 101,526

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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.