Home / 66,605,901.45-99,907,719.03-19,919,493.93

Finding the Fourth Proportional to 66,605,901.45, 99,907,719.03 and 19,919,493.93

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Solution

The fourth proportional to 66,605,901.45, 99,907,719.03 and 19,919,493.93 is: 29,878,902.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,605,901.45 : 99,907,719.03 = 19,919,493.93 : x
  2. Step 2: Convert to fraction form
    66,605,901.45/99,907,719.03 = 19,919,493.93/x
  3. Step 3: Cross multiply
    66,605,901.45x = 99,907,719.03 × 19,919,493.93
  4. Step 4: Simplify right side
    66,605,901.45x = 1,990,111,202,778,230.50
  5. Step 5: Solve for x
    x = 1,990,111,202,778,230.50/66,605,901.45
  6. Step 6: Final answer
    x = 29,878,902.01

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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.