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Finding the Fourth Proportional to 139,969,259.70, 209,953,889.55 and 37,743,630.90

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Solution

The fourth proportional to 139,969,259.70, 209,953,889.55 and 37,743,630.90 is: 56,615,446.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,259.70 : 209,953,889.55 = 37,743,630.90 : x
  2. Step 2: Convert to fraction form
    139,969,259.70/209,953,889.55 = 37,743,630.90/x
  3. Step 3: Cross multiply
    139,969,259.70x = 209,953,889.55 × 37,743,630.90
  4. Step 4: Simplify right side
    139,969,259.70x = 7,924,422,113,194,567
  5. Step 5: Solve for x
    x = 7,924,422,113,194,567/139,969,259.70
  6. Step 6: Final answer
    x = 56,615,446.35

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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.