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Finding the Fourth Proportional to 139,892,528.90, 209,838,793.35 and 44,154,416.90

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Solution

The fourth proportional to 139,892,528.90, 209,838,793.35 and 44,154,416.90 is: 66,231,625.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,892,528.90 : 209,838,793.35 = 44,154,416.90 : x
  2. Step 2: Convert to fraction form
    139,892,528.90/209,838,793.35 = 44,154,416.90/x
  3. Step 3: Cross multiply
    139,892,528.90x = 209,838,793.35 × 44,154,416.90
  4. Step 4: Simplify right side
    139,892,528.90x = 9,265,309,563,368,848
  5. Step 5: Solve for x
    x = 9,265,309,563,368,848/139,892,528.90
  6. Step 6: Final answer
    x = 66,231,625.35

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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.