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Finding the Fourth Proportional to 1,331,761.86, 1,836,605.72 and 872,709.71

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Solution

The fourth proportional to 1,331,761.86, 1,836,605.72 and 872,709.71 is: 1,203,536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,761.86 : 1,836,605.72 = 872,709.71 : x
  2. Step 2: Convert to fraction form
    1,331,761.86/1,836,605.72 = 872,709.71/x
  3. Step 3: Cross multiply
    1,331,761.86x = 1,836,605.72 × 872,709.71
  4. Step 4: Simplify right side
    1,331,761.86x = 1,602,823,638,284.29
  5. Step 5: Solve for x
    x = 1,602,823,638,284.29/1,331,761.86
  6. Step 6: Final answer
    x = 1,203,536.22

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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.