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Finding the Fourth Proportional to 1,411,689.90, 1,947,973.92 and 799,711.56

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Solution

The fourth proportional to 1,411,689.90, 1,947,973.92 and 799,711.56 is: 1,103,512.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,689.90 : 1,947,973.92 = 799,711.56 : x
  2. Step 2: Convert to fraction form
    1,411,689.90/1,947,973.92 = 799,711.56/x
  3. Step 3: Cross multiply
    1,411,689.90x = 1,947,973.92 × 799,711.56
  4. Step 4: Simplify right side
    1,411,689.90x = 1,557,817,262,402.52
  5. Step 5: Solve for x
    x = 1,557,817,262,402.52/1,411,689.90
  6. Step 6: Final answer
    x = 1,103,512.37

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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.