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Finding the Fourth Proportional to 68,902,685.80, 103,354,028.70 and 59,549,324.20

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Solution

The fourth proportional to 68,902,685.80, 103,354,028.70 and 59,549,324.20 is: 89,323,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,902,685.80 : 103,354,028.70 = 59,549,324.20 : x
  2. Step 2: Convert to fraction form
    68,902,685.80/103,354,028.70 = 59,549,324.20/x
  3. Step 3: Cross multiply
    68,902,685.80x = 103,354,028.70 × 59,549,324.20
  4. Step 4: Simplify right side
    68,902,685.80x = 6,154,662,562,432,405
  5. Step 5: Solve for x
    x = 6,154,662,562,432,405/68,902,685.80
  6. Step 6: Final answer
    x = 89,323,986.30

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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.