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Finding the Fourth Proportional to 1,713,092.80, 2,569,639.20 and 916,830.40

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Solution

The fourth proportional to 1,713,092.80, 2,569,639.20 and 916,830.40 is: 1,375,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,713,092.80 : 2,569,639.20 = 916,830.40 : x
  2. Step 2: Convert to fraction form
    1,713,092.80/2,569,639.20 = 916,830.40/x
  3. Step 3: Cross multiply
    1,713,092.80x = 2,569,639.20 × 916,830.40
  4. Step 4: Simplify right side
    1,713,092.80x = 2,355,923,335,591.68
  5. Step 5: Solve for x
    x = 2,355,923,335,591.68/1,713,092.80
  6. Step 6: Final answer
    x = 1,375,245.60

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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.