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Finding the Fourth Proportional to 15,169,990.80, 22,754,986.20 and 10,068,157.20

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Solution

The fourth proportional to 15,169,990.80, 22,754,986.20 and 10,068,157.20 is: 15,102,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,169,990.80 : 22,754,986.20 = 10,068,157.20 : x
  2. Step 2: Convert to fraction form
    15,169,990.80/22,754,986.20 = 10,068,157.20/x
  3. Step 3: Cross multiply
    15,169,990.80x = 22,754,986.20 × 10,068,157.20
  4. Step 4: Simplify right side
    15,169,990.80x = 229,100,778,145,430.62
  5. Step 5: Solve for x
    x = 229,100,778,145,430.62/15,169,990.80
  6. Step 6: Final answer
    x = 15,102,235.80

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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.