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Finding the Fourth Proportional to 139,971,651.40, 209,957,477.10 and 44,233,539.40

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Solution

The fourth proportional to 139,971,651.40, 209,957,477.10 and 44,233,539.40 is: 66,350,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,971,651.40 : 209,957,477.10 = 44,233,539.40 : x
  2. Step 2: Convert to fraction form
    139,971,651.40/209,957,477.10 = 44,233,539.40/x
  3. Step 3: Cross multiply
    139,971,651.40x = 209,957,477.10 × 44,233,539.40
  4. Step 4: Simplify right side
    139,971,651.40x = 9,287,162,335,627,448
  5. Step 5: Solve for x
    x = 9,287,162,335,627,448/139,971,651.40
  6. Step 6: Final answer
    x = 66,350,309.10

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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.