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Finding the Fourth Proportional to 73,998.90, 111,006.45 and 71,666.10

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Solution

The fourth proportional to 73,998.90, 111,006.45 and 71,666.10 is: 107,506.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,998.90 : 111,006.45 = 71,666.10 : x
  2. Step 2: Convert to fraction form
    73,998.90/111,006.45 = 71,666.10/x
  3. Step 3: Cross multiply
    73,998.90x = 111,006.45 × 71,666.10
  4. Step 4: Simplify right side
    73,998.90x = 7,955,399,346.35
  5. Step 5: Solve for x
    x = 7,955,399,346.35/73,998.90
  6. Step 6: Final answer
    x = 107,506.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.