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Finding the Fourth Proportional to 913,672.80, 1,369,342.80 and 702,262.80

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Solution

The fourth proportional to 913,672.80, 1,369,342.80 and 702,262.80 is: 1,052,497.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,672.80 : 1,369,342.80 = 702,262.80 : x
  2. Step 2: Convert to fraction form
    913,672.80/1,369,342.80 = 702,262.80/x
  3. Step 3: Cross multiply
    913,672.80x = 1,369,342.80 × 702,262.80
  4. Step 4: Simplify right side
    913,672.80x = 961,638,508,887.84
  5. Step 5: Solve for x
    x = 961,638,508,887.84/913,672.80
  6. Step 6: Final answer
    x = 1,052,497.69

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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.