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Finding the Fourth Proportional to 1,932,215.12, 2,666,333.52 and 1,072,775.12

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Solution

The fourth proportional to 1,932,215.12, 2,666,333.52 and 1,072,775.12 is: 1,480,361.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,932,215.12 : 2,666,333.52 = 1,072,775.12 : x
  2. Step 2: Convert to fraction form
    1,932,215.12/2,666,333.52 = 1,072,775.12/x
  3. Step 3: Cross multiply
    1,932,215.12x = 2,666,333.52 × 1,072,775.12
  4. Step 4: Simplify right side
    1,932,215.12x = 2,860,376,261,878.02
  5. Step 5: Solve for x
    x = 2,860,376,261,878.02/1,932,215.12
  6. Step 6: Final answer
    x = 1,480,361.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.