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Finding the Fourth Proportional to 73,707.23, 102,008.30 and 71,938.49

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Solution

The fourth proportional to 73,707.23, 102,008.30 and 71,938.49 is: 99,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,707.23 : 102,008.30 = 71,938.49 : x
  2. Step 2: Convert to fraction form
    73,707.23/102,008.30 = 71,938.49/x
  3. Step 3: Cross multiply
    73,707.23x = 102,008.30 × 71,938.49
  4. Step 4: Simplify right side
    73,707.23x = 7,338,323,069.47
  5. Step 5: Solve for x
    x = 7,338,323,069.47/73,707.23
  6. Step 6: Final answer
    x = 99,560.42

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1.5x scale

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.