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Finding the Fourth Proportional to 1,229,691, 1,696,973.58 and 664,443

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Solution

The fourth proportional to 1,229,691, 1,696,973.58 and 664,443 is: 916,931.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,691 : 1,696,973.58 = 664,443 : x
  2. Step 2: Convert to fraction form
    1,229,691/1,696,973.58 = 664,443/x
  3. Step 3: Cross multiply
    1,229,691x = 1,696,973.58 × 664,443
  4. Step 4: Simplify right side
    1,229,691x = 1,127,542,216,415.94
  5. Step 5: Solve for x
    x = 1,127,542,216,415.94/1,229,691
  6. Step 6: Final answer
    x = 916,931.34

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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.