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Finding the Fourth Proportional to 66,114,956.40, 99,186,431.40 and 20,053,042.80

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Solution

The fourth proportional to 66,114,956.40, 99,186,431.40 and 20,053,042.80 is: 30,083,809.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,114,956.40 : 99,186,431.40 = 20,053,042.80 : x
  2. Step 2: Convert to fraction form
    66,114,956.40/99,186,431.40 = 20,053,042.80/x
  3. Step 3: Cross multiply
    66,114,956.40x = 99,186,431.40 × 20,053,042.80
  4. Step 4: Simplify right side
    66,114,956.40x = 1,988,989,754,043,464
  5. Step 5: Solve for x
    x = 1,988,989,754,043,464/66,114,956.40
  6. Step 6: Final answer
    x = 30,083,809.51

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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.