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Finding the Fourth Proportional to 139,892,440.40, 209,838,660.60 and 44,154,328.40

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Solution

The fourth proportional to 139,892,440.40, 209,838,660.60 and 44,154,328.40 is: 66,231,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,892,440.40 : 209,838,660.60 = 44,154,328.40 : x
  2. Step 2: Convert to fraction form
    139,892,440.40/209,838,660.60 = 44,154,328.40/x
  3. Step 3: Cross multiply
    139,892,440.40x = 209,838,660.60 × 44,154,328.40
  4. Step 4: Simplify right side
    139,892,440.40x = 9,265,285,131,148,540
  5. Step 5: Solve for x
    x = 9,265,285,131,148,540/139,892,440.40
  6. Step 6: Final answer
    x = 66,231,492.60

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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.