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Finding the Fourth Proportional to 1,232,979.76, 1,849,469.60 and 346,515.76

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Solution

The fourth proportional to 1,232,979.76, 1,849,469.60 and 346,515.76 is: 519,773.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232,979.76 : 1,849,469.60 = 346,515.76 : x
  2. Step 2: Convert to fraction form
    1,232,979.76/1,849,469.60 = 346,515.76/x
  3. Step 3: Cross multiply
    1,232,979.76x = 1,849,469.60 × 346,515.76
  4. Step 4: Simplify right side
    1,232,979.76x = 640,870,364,040.90
  5. Step 5: Solve for x
    x = 640,870,364,040.90/1,232,979.76
  6. Step 6: Final answer
    x = 519,773.63

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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.