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Finding the Fourth Proportional to 66,476,003.80, 99,714,005.70 and 21,041,354.20

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Solution

The fourth proportional to 66,476,003.80, 99,714,005.70 and 21,041,354.20 is: 31,562,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,476,003.80 : 99,714,005.70 = 21,041,354.20 : x
  2. Step 2: Convert to fraction form
    66,476,003.80/99,714,005.70 = 21,041,354.20/x
  3. Step 3: Cross multiply
    66,476,003.80x = 99,714,005.70 × 21,041,354.20
  4. Step 4: Simplify right side
    66,476,003.80x = 2,098,117,712,634,519
  5. Step 5: Solve for x
    x = 2,098,117,712,634,519/66,476,003.80
  6. Step 6: Final answer
    x = 31,562,031.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.