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Finding the Fourth Proportional to 1,411,969.22, 1,948,530.30 and 767,390.94

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Solution

The fourth proportional to 1,411,969.22, 1,948,530.30 and 767,390.94 is: 1,059,006.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,969.22 : 1,948,530.30 = 767,390.94 : x
  2. Step 2: Convert to fraction form
    1,411,969.22/1,948,530.30 = 767,390.94/x
  3. Step 3: Cross multiply
    1,411,969.22x = 1,948,530.30 × 767,390.94
  4. Step 4: Simplify right side
    1,411,969.22x = 1,495,284,498,535.48
  5. Step 5: Solve for x
    x = 1,495,284,498,535.48/1,411,969.22
  6. Step 6: Final answer
    x = 1,059,006.44

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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.