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Finding the Fourth Proportional to 99,795,266.60, 149,804,874.30 and 77,176,437.80

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Solution

The fourth proportional to 99,795,266.60, 149,804,874.30 and 77,176,437.80 is: 115,851,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,795,266.60 : 149,804,874.30 = 77,176,437.80 : x
  2. Step 2: Convert to fraction form
    99,795,266.60/149,804,874.30 = 77,176,437.80/x
  3. Step 3: Cross multiply
    99,795,266.60x = 149,804,874.30 × 77,176,437.80
  4. Step 4: Simplify right side
    99,795,266.60x = 11,561,406,563,550,770
  5. Step 5: Solve for x
    x = 11,561,406,563,550,770/99,795,266.60
  6. Step 6: Final answer
    x = 115,851,251.84

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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.