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Finding the Fourth Proportional to 1,929,398.88, 2,662,528.80 and 1,113,538.56

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Solution

The fourth proportional to 1,929,398.88, 2,662,528.80 and 1,113,538.56 is: 1,536,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929,398.88 : 2,662,528.80 = 1,113,538.56 : x
  2. Step 2: Convert to fraction form
    1,929,398.88/2,662,528.80 = 1,113,538.56/x
  3. Step 3: Cross multiply
    1,929,398.88x = 2,662,528.80 × 1,113,538.56
  4. Step 4: Simplify right side
    1,929,398.88x = 2,964,828,485,910.53
  5. Step 5: Solve for x
    x = 2,964,828,485,910.53/1,929,398.88
  6. Step 6: Final answer
    x = 1,536,659.17

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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.