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Finding the Fourth Proportional to 1,216,370.64, 1,678,223.04 and 848,838

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Solution

The fourth proportional to 1,216,370.64, 1,678,223.04 and 848,838 is: 1,171,139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,370.64 : 1,678,223.04 = 848,838 : x
  2. Step 2: Convert to fraction form
    1,216,370.64/1,678,223.04 = 848,838/x
  3. Step 3: Cross multiply
    1,216,370.64x = 1,678,223.04 × 848,838
  4. Step 4: Simplify right side
    1,216,370.64x = 1,424,539,488,827.52
  5. Step 5: Solve for x
    x = 1,424,539,488,827.52/1,216,370.64
  6. Step 6: Final answer
    x = 1,171,139.32

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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.