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Finding the Fourth Proportional to 99,116,999.80, 148,675,499.70 and 60,374,950.90

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Solution

The fourth proportional to 99,116,999.80, 148,675,499.70 and 60,374,950.90 is: 90,562,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,116,999.80 : 148,675,499.70 = 60,374,950.90 : x
  2. Step 2: Convert to fraction form
    99,116,999.80/148,675,499.70 = 60,374,950.90/x
  3. Step 3: Cross multiply
    99,116,999.80x = 148,675,499.70 × 60,374,950.90
  4. Step 4: Simplify right side
    99,116,999.80x = 8,976,275,994,420,464
  5. Step 5: Solve for x
    x = 8,976,275,994,420,464/99,116,999.80
  6. Step 6: Final answer
    x = 90,562,426.35

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1.5x scale

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.