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Finding the Fourth Proportional to 139,968,411.70, 209,952,617.55 and 49,092,000.70

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Solution

The fourth proportional to 139,968,411.70, 209,952,617.55 and 49,092,000.70 is: 73,638,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,411.70 : 209,952,617.55 = 49,092,000.70 : x
  2. Step 2: Convert to fraction form
    139,968,411.70/209,952,617.55 = 49,092,000.70/x
  3. Step 3: Cross multiply
    139,968,411.70x = 209,952,617.55 × 49,092,000.70
  4. Step 4: Simplify right side
    139,968,411.70x = 10,306,994,047,731,434
  5. Step 5: Solve for x
    x = 10,306,994,047,731,434/139,968,411.70
  6. Step 6: Final answer
    x = 73,638,001.05

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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.