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Finding the Fourth Proportional to 139,056,138.90, 195,081,702.30 and 139,056,138.90

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Solution

The fourth proportional to 139,056,138.90, 195,081,702.30 and 139,056,138.90 is: 195,081,702.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,056,138.90 : 195,081,702.30 = 139,056,138.90 : x
  2. Step 2: Convert to fraction form
    139,056,138.90/195,081,702.30 = 139,056,138.90/x
  3. Step 3: Cross multiply
    139,056,138.90x = 195,081,702.30 × 139,056,138.90
  4. Step 4: Simplify right side
    139,056,138.90x = 27,127,308,291,877,252
  5. Step 5: Solve for x
    x = 27,127,308,291,877,252/139,056,138.90
  6. Step 6: Final answer
    x = 195,081,702.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.