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Finding the Fourth Proportional to 8,969,102.80, 13,454,966.40 and 2,902,802.20

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Solution

The fourth proportional to 8,969,102.80, 13,454,966.40 and 2,902,802.20 is: 4,354,627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969,102.80 : 13,454,966.40 = 2,902,802.20 : x
  2. Step 2: Convert to fraction form
    8,969,102.80/13,454,966.40 = 2,902,802.20/x
  3. Step 3: Cross multiply
    8,969,102.80x = 13,454,966.40 × 2,902,802.20
  4. Step 4: Simplify right side
    8,969,102.80x = 39,057,106,066,846.09
  5. Step 5: Solve for x
    x = 39,057,106,066,846.09/8,969,102.80
  6. Step 6: Final answer
    x = 4,354,627.99

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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.