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Finding the Fourth Proportional to 984,672.40, 1,476,117.60 and 685,296.40

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Solution

The fourth proportional to 984,672.40, 1,476,117.60 and 685,296.40 is: 1,027,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,672.40 : 1,476,117.60 = 685,296.40 : x
  2. Step 2: Convert to fraction form
    984,672.40/1,476,117.60 = 685,296.40/x
  3. Step 3: Cross multiply
    984,672.40x = 1,476,117.60 × 685,296.40
  4. Step 4: Simplify right side
    984,672.40x = 1,011,578,077,256.64
  5. Step 5: Solve for x
    x = 1,011,578,077,256.64/984,672.40
  6. Step 6: Final answer
    x = 1,027,324.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.