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Finding the Fourth Proportional to 139,968,194.60, 209,952,291.90 and 114,438,031.40

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Solution

The fourth proportional to 139,968,194.60, 209,952,291.90 and 114,438,031.40 is: 171,657,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,194.60 : 209,952,291.90 = 114,438,031.40 : x
  2. Step 2: Convert to fraction form
    139,968,194.60/209,952,291.90 = 114,438,031.40/x
  3. Step 3: Cross multiply
    139,968,194.60x = 209,952,291.90 × 114,438,031.40
  4. Step 4: Simplify right side
    139,968,194.60x = 24,026,526,972,954,168
  5. Step 5: Solve for x
    x = 24,026,526,972,954,168/139,968,194.60
  6. Step 6: Final answer
    x = 171,657,047.10

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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.