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Finding the Fourth Proportional to 1,415,508, 1,953,371.88 and 770,939.52

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Solution

The fourth proportional to 1,415,508, 1,953,371.88 and 770,939.52 is: 1,063,880.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415,508 : 1,953,371.88 = 770,939.52 : x
  2. Step 2: Convert to fraction form
    1,415,508/1,953,371.88 = 770,939.52/x
  3. Step 3: Cross multiply
    1,415,508x = 1,953,371.88 × 770,939.52
  4. Step 4: Simplify right side
    1,415,508x = 1,505,931,579,548.70
  5. Step 5: Solve for x
    x = 1,505,931,579,548.70/1,415,508
  6. Step 6: Final answer
    x = 1,063,880.66

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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.