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Finding the Fourth Proportional to 139,968,114.40, 209,952,171.60 and 101,448,920.80

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Solution

The fourth proportional to 139,968,114.40, 209,952,171.60 and 101,448,920.80 is: 152,173,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,114.40 : 209,952,171.60 = 101,448,920.80 : x
  2. Step 2: Convert to fraction form
    139,968,114.40/209,952,171.60 = 101,448,920.80/x
  3. Step 3: Cross multiply
    139,968,114.40x = 209,952,171.60 × 101,448,920.80
  4. Step 4: Simplify right side
    139,968,114.40x = 21,299,421,228,436,408
  5. Step 5: Solve for x
    x = 21,299,421,228,436,408/139,968,114.40
  6. Step 6: Final answer
    x = 152,173,381.20

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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.