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Finding the Fourth Proportional to 20,804,597.90, 31,206,994.06 and 7,341,425.90

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Solution

The fourth proportional to 20,804,597.90, 31,206,994.06 and 7,341,425.90 is: 11,012,173.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,597.90 : 31,206,994.06 = 7,341,425.90 : x
  2. Step 2: Convert to fraction form
    20,804,597.90/31,206,994.06 = 7,341,425.90/x
  3. Step 3: Cross multiply
    20,804,597.90x = 31,206,994.06 × 7,341,425.90
  4. Step 4: Simplify right side
    20,804,597.90x = 229,103,834,453,230.16
  5. Step 5: Solve for x
    x = 229,103,834,453,230.16/20,804,597.90
  6. Step 6: Final answer
    x = 11,012,173.15

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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.