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Finding the Fourth Proportional to 139,968,277.70, 209,952,416.55 and 49,101,052.10

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Solution

The fourth proportional to 139,968,277.70, 209,952,416.55 and 49,101,052.10 is: 73,651,578.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,277.70 : 209,952,416.55 = 49,101,052.10 : x
  2. Step 2: Convert to fraction form
    139,968,277.70/209,952,416.55 = 49,101,052.10/x
  3. Step 3: Cross multiply
    139,968,277.70x = 209,952,416.55 × 49,101,052.10
  4. Step 4: Simplify right side
    139,968,277.70x = 10,308,884,543,542,454
  5. Step 5: Solve for x
    x = 10,308,884,543,542,454/139,968,277.70
  6. Step 6: Final answer
    x = 73,651,578.15

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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.